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Classification of Elements and Periodicity in Properties — JEE Main & Advanced Chemistry PYQs

359 previous year questions from Classification of Elements and Periodicity in Properties with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

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1

The correct statement(s) regarding the periodic properties of elements is(are)

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Match List-I with List-II. List-I Electronic configuration of neutral atom (where n=2 ) List-II 1^ st Ionization Energy (kJ mol ⁻¹ ) A. ns^2 I. 2080 B. ns^2np^1 II. 899 C. ns^2np^3

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In a period, the first ionisation enthalpy of the element at extreme left and the negative electron gain enthalpy of the extreme right element, except noble gases, are respectively

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Given below are two statements: Statement I: Aluminium is more electropositive than thallium as the standard electrode potential value of E^ _ Al ³⁺/ Al is negative and E^ _ Tl ³⁺/

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Given below are two statements : Statement I: The number of pairs among [Al₂O₃, Cr₂O₃] , [Cl₂O₇, Mn₂O₇] , [Na₂O, V₂O₃] and [CO, N₂O] that contain oxides of same nature (acidic, bas

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Given below are two statements: Statement I: The correct order of electronegativity of fluorine, oxygen and nitrogen is F > O > N . Statement II: The oxidation state of oxygen in O

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The 1^ st ionization enthalpy for Mg is +737 kJ/mol. The most probable estimated value of the 2^ nd ionization enthalpy of Mg is ______.

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The electronegativity of a group 13 element 'E' is same as that of Ge (on Pauling scale and upto one decimal point). The CORRECT statements about E³⁺ are A. It can act as a reducin

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Given below are two statements: Statement I: The second ionization enthalpy of B, Al and Ga is in the order of B > Al > Ga . Statement II: The correct order in terms of first ioniz

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Given below are two statements: Statement I: Among Zn, Mn, Sc and Cu , the energy required to remove the third valence electron is highest for Zn and lowest for Sc . Statement II:

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Given below are two statements : Statement (I) : The first ionisation enthalpy of the elements Na, Mg, Cl and Ar follows the order Na > Mg > Cl > Ar. Statement (II) : Among Ca, Al,

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Consider the elements N , P , O , S , Cl and F. The number of valence electrons present in the elements with most and least metallic character from the above list is respectively.

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In period 4 of the periodic table, the elements with highest and lowest atomic radii are respectively.

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The correct order of C , N , O and F in terms of second ionisation potential is

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Choose the INCORRECT statement

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Given below are two statements: Statement I : K > Mg > Al > B is the correct order in terms of metallic character. Statement II : Atomic radius is always greater than the ionic rad

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Elements X and Y belong to Group 15. The difference between the electronegativity values of ' X ' and phosphorus is higher than that of the difference between phosphorus and ' Y '.

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Given below are two statements: Statement I : The second ionisation enthalpy of Na is larger than the corresponding ionisation enthalpy of Mg. Statement II : The ionic radius of O

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The correct trend in the first ionization enthalpies of the elements in the 3^ rd period of periodic table is :

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Given below are two statements : Statement I : C Statement II : S > Se > Te > Po > O is the correct order in terms of the magnitude of electron gain enthalpy values. In the light o

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Given below are two statements: Statement I : The halogen that makes longest bond with hydrogen in HX, has the smallest covalent radius in its group. Statement II : A group 15 elem

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Given below are two statements : Statement I : The correct order in terms of atomic/ionic radii is Al > Mg > Mg ²⁺> Al ³⁺ . Statement II : The correct order in terms of the magnitu

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Which of the following represents the correct trend for the mentioned property ? A. F > P > S > B - First Ionization Energy B. Cl > F > S > P - Electron Affinity C. K > Al > Mg > B

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The atomic number of the element from the following with lowest 1^ st ionisation enthalpy is :

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The correct statements from the following are : (A) Tl ³⁺ is a powerful oxidising agent (B) Al ³⁺ does not get reduced easily (C) Both Al ³⁺ and Tl ³⁺ are very stable in solution (

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Choose the incorrect trend in the atomic radii ( r ) of the elements :

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The elements of Group 13 with highest and lowest first ionisation enthalpies are respectively:

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Given below are the pairs of group 13 element showing their relation in terms of atomic radius. ( B Al ),( Al Ga ),( Ga In ) and ( In Tl ) Identify the elements present in the inco

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Match the List-I with List-II. array |l|l|l|l| & array c List-I (Family) array & & array c List-II (Symbol of Element) array A. & array l Pnicogen (group 15) array & I. & Ts B. & C

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The correct orders among the following are Atomic radius : B Al Ga In Tl Electronegativity : Al Ga In Tl B Density : Tl In Ga Al B 1st Ionisation Energy : In Al Ga Tl B Choose the

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Which of the following statements are correct? A. The process of the addition an electron to a neutral gaseous atom is always exothermic B. The process of removing an electron from

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Electronic configuration of four elements A , B , C and D are given below : (A) 1 ~s ^2 2 ~s ^2 2 p ^3 (B) 1 ~s ^2 2 ~s ^2 2 p ^4 (C) 1 ~s ^2 2 ~s ^2 2 p ^5 (D) 1 ~s ^2 2 ~s ^2 2 p

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Given below are two statements : Statement (I): The metallic radius of Al is less than that of Ga. Statement (II) : The ionic radius of ( Al ³⁺ ) is less than that of ( Ga ³⁺ ). In

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The property/properties that show irregularity in first four elements of group-17 is/are : (A) Covalent radius (B) Electron affinity (C) Ionic radius (D) First ionization energy Ch

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The type of oxide formed by the element among Li , Na , Be , Mg , B and Al that has the least atomic radius is :

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First ionisation enthalpy values of first four group 15 elements are given below. Choose the correct value for the element that is a main component of apatite family :

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An element ' (E^ ) has the ionisation enthalpy value of (374 ~kJ ~mol ⁻¹ ). ' (E ) ' reacts with elements ( A , B , C ) and D with electron gain enthalpy values of (-328,-349,-325

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Given below are two statements : Statement (I): According to the Law of Octaves, the elements were arranged in the increasing order of their atomic number. Statement (II): Meyer ob

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The incorrect decreasing order of atomic radii is

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The successive 5 ionisation energies of an element are 800,2427,3658,25024 and 32824 ~kJ / mol , respectively. By using the above values predict the group in which the above elemen

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Which of the following statements are NOT true about the periodic table? A. The properties of elements are function of atomic weights. B. The properties of elements are function of

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The element that does not belong to the same period of the remaining elements (modern periodic table) is:

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Given below are two statements : Statement (I) : An element in the extreme left of the periodic table forms acidic oxides. Statement (II) : Acid is formed during the reaction betwe

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Which of the following electronegativity order is incorrect?

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Match List-I with List-II. array llll & List-I & & List-II (A) & Al ³⁺ < Mg ²⁺ < Na ⁺ < F ⁻ & (I) & Ionisation Enthalpy (B) & B < C < O < N & (II) & Metallic character (C) & B < Al

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Match List I with List II ( array |l|l|c|l| & List - I & & List - II A. & Melting Point [ K ] & I. & T 1> In > Ga > A 1> B B. & Ionic Radius [ M ⁺³ / pm ] & II. & B > T 1> A 1 Ga >

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Given below are two statements : Statement (I) : The oxidation state of an element in a particular compound is the charge acquired by its atom on the basis of electron gain enthalp

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Identify the correct statements about p-block elements and their compounds. (A) Non metals have higher electronegativity than metals. (B) Non metals have lower ionisation enthalpy

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Match List I with List II ( array |l|l|c|l| & List - I & & List - II & (Elements) & & (Properties in their respective groups) A. & Cl , S & I. & Elements with highest electronegati

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The electron affinity value are negative for A. ( Be Be ⁻ ) B. ( N N ⁻ ) C. ( O O ²⁻ ) D. ( Na Na ⁻ ) E. ( Al Al ⁻ ) Choose the most appropriate answer from the options given below

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Which of the following material is not a semiconductor.

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Given below are two statements : Statement I : The metallic radius of ( Na ) is (1.86 ~A ^ ) and the ionic radius of ( Na ⁺ )is lesser than (1.86 ~A ^ ). Statement II : Ions are al

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Given below are two statements : Statement I : In group 13, the stability of +1 oxidation state increases down the group. Statement II : The atomic size of gallium is greater than

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The statement(s) that are correct about the species ( O ²⁻, F ⁻, Na ⁺ )and ( Mg ²⁺ ). (A) All are isoelectronic (B) All have the same nuclear charge (C) ( O ²⁻ ) has the largest io

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The correct order of the first ionization enthalpy is

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Given below are two statements : Statement I : The correct order of first ionization enthalpy values of ( Li , Na , F ) and ( Cl ) is ( Na < Li < Cl < F ). Statement II : The corre

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Number of elements from the following that CANNOT form compounds with valencies which match with their respective group valencies is ______. B, C, N, S, O, F, P, Al, Si

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The correct order of first ionization enthalpy values of the following elements is : (A) ( O ) (B) ( N ) (C) ( Be ) (D) ( F ) (E) ( B ) Choose the correct answer from the options g

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Given below are two statements : Statement (I) : Both metal and non-metal exist in p and d-block elements. Statement (II) : Non-metals have higher ionisation enthalpy and higher el

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In case of isoelectronic species the size of F – , Ne and Na + is affected by:

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Lowest Oxidation number of an atom in a compound A 2 B is - 2 . The number of an electron in its valence shell is

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Consider the following elements. Which of the following is/are true about A ' , B ' , C ' and D ' ? A. Order of atomic radii: B ' < A ' < D ' < C ' B. Order of metallic character :

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The correct sequence of electron gain enthalpy of the elements listed below is A. Ar B. Br C. F D. S Choose the most appropriate from the options given below:

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Given below are two statements: Statement - I: Along the period, the chemical reactivity of the element gradually increases from group 1 to group 18 . Statement - II: The nature of

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If IUPAC name of an element is "Unununnium" then the element belongs to nth group of periodic table. The value of n is _______.

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Given below are the two statements: one is labeled as Assertion (A) and the other is labeled as Reason (R). Assertion (A): There is a considerable increase in covalent radius from

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The element having the highest first ionization enthalpy is

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Given below are two statements: Statement I: Fluorine has most negative electron gain enthalpy in its group. Statement II: Oxygen has least negative electron gain enthalpy in its g

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Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: The first ionisation enthalpy decreases across a period. Reason

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. Identify the correct order of standard enthalpy of formation of sodium halides.

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Which of the following statements are not correct? A. The electron gain enthalpy of F is more negative than that of Cl . B. Ionization enthalpy decreases in a group of periodic tab

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For compound having the formula GaAlCl 4 , the correct option from the following is

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For elements B , C , N Li , Be , O and F , the correct order of first ionisation enthalpy is

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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : The energy required to form Mg 2 + from Mg is much higher than

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The correct order of metallic character is

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The correct order of electronegativity for given elements is

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Which one of the following elements will remain as liquid inside pure boiling water?

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Group- 13 elements react with O 2 in amorphous form to form oxides of type M 2 O 3 ( M = element). Which among the following is the most basic oxide?

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For electron gain enthalpies of the elements denoted as &#916; eg H , the incorrect option is :

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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The first ionization enthalpy of 3 d series elements is mor

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The correct increasing order of the ionic radii is

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Bond dissociation energy of E - H bond of the " H 2 E " hydrides of group 16 elements (given below), follows order. (A) O (B) S (C) Se (D) Te

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Match List - I with List - II List-I (Atomic number) List-II (Block of periodic table) (A) 37 I. p -block (B) 78 II. d -block (C) 52 III. f -block (D) 65 IV. s -block Choose the co

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Given below are two statements: Statement I: The decrease in first ionization enthalpy from B to Al is much larger than that from Al to Ga . Statement II: The d orbitals in Ga are

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The first ionization enthalpy of Na , Mg and Si , respectively, are: 496 , 737 and 786 kJ mo 1 - 1 . The first ionization enthalpy kJmol - 1 of Al is

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The correct decreasing order for metallic character is

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In which of the following pairs, electron gain enthalpies of constituent elements are nearly the same or identical? (A) Rb and Cs (B) Na and K (C) Ar and Kr (D) I and At Choose the

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Outermost electronic configurations of four elements A , B , C , D are given below: (A) 3 s 2 (B) 3 s 2 3 p 1 (C) 3 s 2 3 p 3 (D) 3 s 2 3 p 4 The correct order of first ionization

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The incorrect statement is

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The metal that has very low melting point and its periodic position is closer to a metalloid is

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Given two statements below : Statement I : In Cl 2 molecule the covalent radius is double of the atomic radius of chlorine. Statement II : Radius of anionic species is always great

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The first ionization enthalpies of Be , B , N and O follow the order

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The IUPAC nomenclature of an element with electronic configuration Rn 5 f 14 6 d 1 7 s 2 is

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Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R . Assertion A : The first ionization enthalpy for oxygen is lower than that of

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Match List-I with List-II List-I List-II (A) Cl 2 O 7 (I) Amphoteric (B) Na 2 O (II) Basic (C) Al 2 O 3 (III) Neutral (D) N 2 O (IV) Acidic Choose the correct answer from the optio

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Element " E " belongs to the period 4 and group 16 of the periodic table. The valence shell electron configuration of the element, which is just above " E " in the group is

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The correct order of ionic size of N 3 - , Na + , F - , Mg 2 + and O 2 - is :

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Given below are two statements : one is labelled as Assertion and the other is labelled as Reason. Assertion: The ionic radii of O 2 - and Mg 2 + are same. Reason: Both O 2 - and M

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Which of the following is a metalloid?

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What is the correct oder of electron gain enthalpy of Cl , F , Te , Po

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Metals generally melt at very high temperatures, Among the following which one has the highest melting point?

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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Metallic character decreases and non-metallic character i

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The correct order of ionic radii for the ions, P 3 - , S 2 - , Ca 2 + , K + , Cl - is :

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The class of drug to which chlordiazepoxide with above structure belongs is :

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The CORRECT order of first ionisation enthalpy is:

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Match List - I with List - II : List - I List - II a NaOH i Acidic b Be ( OH ) 2 ii Basic c Ca ( OH ) 2 iii Amphoteric d B ( OH ) 3 e Al ( OH ) 3 Choose the most appropriate answer

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The ionic radii of F - and O 2 - respectively are 1 . 33 A and 1 . 4 A , while the covalent radius of N is 0 . 74 A The correct statement for the ionic radius of N 3 - from the fol

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The ionic radii of K + , Na + , Al 3 + and Mg 2 + are in the order :

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Which one of the following statements for D.I. Mendeleeff, is incorrect ?

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The set in which compounds have different nature is:

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The first ionization energy of magnesium is smaller, as compared to that of elements X and Y , but higher than that of Z . The elements X , Y and Z , respectively, are :

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The ionic radius of Na + ions is 1 . 02 A &#176; . The ionic radii (in A &#176; ) of Mg 2 + and Al 3 + , respectively, are

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The absolute value of the electron gain enthalpy of halogens satisfies:

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Identify the elements X and Y using the ionization energy values given below : Ionization energy ( kJ / mol ) 1 st 2 nd X 495 4563 Y 731 1450

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The characteristics of elements X , Y and Z with atomic numbers, respectively, 33 , 53 and 83 are:

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The correct order of electron gain enthalpy is:

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Which pair of oxides is acidic in nature?

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Match List- I with List- II . List- I Electronic configuration of elements List- II &#916; i H in kJ mol - 1 a 1 s 2 2 s 2 p 801 b 1 s 2 2 s 2 2 p 4 q 899 c 1 s 2 2 s 2 2 p 3 r 131

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Consider the elements Mg , Al , S , P and Si , the correct increasing order of their first ionisation enthalpy is:

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The 1 st , 2 nd and the 3 rd ionization enthalpies, I 1 , I 2 and I 3 , of four atoms with atomic numbers n , n + 1 , n + 2 , and n + 3 , where n &#60; 10 , are tabulated below. Wh

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