JEE PYQ Chemical Bonding and Molecular Structure - Chapter-wise Questions with Solutions

About Chemical Bonding and Molecular Structure PYQs

Chemical Bonding and Molecular Structure has 635 previous year questions in the Quantrex Academy JEE Main & Advanced Chemistry bank. The 220 questions in this list come from JEE Main (186) and JEE Advanced (34), spanning 2006 to 2026. Each question opens on its own page with the options, the correct answer and the worked solution where available.

JEE Chemical Bonding and Molecular Structure PYQs with Solutions

About Chemical Bonding and Molecular Structure PYQs

Questions by year (this list)

Chemical Bonding and Molecular Structure questions with solutions

The correct order of dipole moments for the given species is

Consider the following species: SOCl_2 , XeOF_4 , ClF_3 , ClF_5 , XeF_5^+ , SO_3^ 2- , XeF_3^+ , SF_4 List-I contains different molecular shapes and List-II contains total number

The correct order of ONO bond angle in the given species is

Bromine trifluoride autoionizes to form BrF_2^ and BrF_4^ . The shapes of the cation and anion are respectively ________, and ________.

Given below are two statements : Statement I : The number of compounds among SO _2 , SO _3 , SF _4 , SF _6 and H _2 S in which sulphur does not obey the Octet rule is 3 .

Given below are two statements : Statement I : F _2 O Statement II : SiF _4 , SnF _4 and PbF _4 are ionic in nature. In the light of the above statements, choose the correct

The pairs among A = [SO_3^ 2- , CO_3^ 2- ] , B = [O_2^ 2- , F_2] , C = [CN^-, CO] , D = [NH_3, H_3O^+] and E = [MnO_4^ 2- , CrO_4^ 2- ] that do not have similar Lewis dot

The covalent radii of atoms A and B are r_A and r_B , respectively. The covalent bond length and total length of AB molecule are respectively

Consider the following species: BrF _5 , XeF _5^- , BF _4^- , ICl _4^- , XeF _4 , SF _4 , NH _4^+ , ClF _3 , XeF _2 , ICl _2^- Number of species having sp ^3 d hybridized central

Which of the following pictorial diagram most correctly represents the π^* ( π -antibonding) molecular orbital between two atoms if the internuclear axis is taken to be in the

According to Lewis theory, the total number of σ bond-pairs and lone pair of electrons around the central atom of XeO_6^ 4- ion is _____.

SF_4 is isostructural with: A. BrF_4^ B. CH_4 C. IF_4^ D. XeF_4 E. XeO_2 F_2 Choose the correct answer from the options given below:

Given below are two statements : Statement (I) : The correct sequence of bond lengths in the following species is : O_2^+ Statement (II) : The correct sequence of number of

Match List - I with List - II according to shape. \( List-I List-II A. XeO_3 I. BrF_5 B. XeF_2 II. NH_3 C. XeO_2F_2 III. [I_3]^- D. XeOF_4 IV. SF_4 \) Choose the correct answer

Given below are two statements: Statement I : The number of species among BF_ 4 ^ - , SiF_ 4 , XeF_ 4 and SF_ 4 , that have unequal E-F bond lengths is two. Here, E is the central

Pair of species among the following having same bond order as well as paramagnetic character will be-

Among the following, the CORRECT combinations are A. IF_ 3 arrow ~T -shaped (sp . ^ 3 ~d) B. IF_ 5 arrow Square pyramidal (sp^ 3 ~d^ 2 ) C. IF_ 7 arrow Pentagonal bipyramidal (sp^

Given below are statements about some molecules/ions. Identify the CORRECT statements. A. The dipole moment value of NF_ 3 is higher than that of NH_ 3 . B. The dipole moment

Which statements are NOT TRUE about XeO_ 2 ~F_ 2 ? A. It has a see-saw shape. B. Xe has 5 electron pairs in its valence shell in XeO_ 2 ~F_ 2 . C. The O-Xe-O bond angle is close

Identify the molecule (X) with maximum number of lone pairs of electrons (obtained using Lewis dot structure) among HNO_ 3 , H_ 2 SO_ 4 , NF_ 3 and O_ 3 . Choose the correct bond

Among H_ 2 ~S, H_ 2 O, NF_ 3 , NH_ 3 and CHCl_ 3 , identify the molecule (X) with lowest dipole moment value. The number of lone pairs of electrons present on the central atom of

Two p-block elements X and Y form fluorides of the type EF_ 3 . The fluoride compound XF_ 3 is a Lewis acid and YF_ 3 is a Lewis base. The hybridizations of the central atoms of

The formal charges on the atoms marked as (1) to (4) in the Lewis representation of HNO_ 3 molecule respectively are

Given below are two statements: Statement I : The correct order in terms of bond dissociation enthalpy is Cl_ 2 >Br_ 2 >F_ 2 >I_ 2 . Statement II : The correct trend in the

The correct increasing order of C-H(A), C-O(B), C=O(C) and C ≡ N(D) bonds in terms of covalent bond length is:

Given below are two statements : Statement I : The number of species among SF_ 4 , NH_ 4 ^ + ,[NiCl_ 4 ]^ 2- , XeF_ 4 ,[PtCl_ 4 ]^ 2- , SeF_ 4 and [Ni(CN)_ 4 ]^ 2- , that have

Regarding the molecular orbital (MO) energy levels for homonuclear diatomic molecules, the INCORRECT statement(s) is(are)

The correct statements (s) about intermolecular forces is(are)

In SO_2, NO_2^ - and N_3^ - the hybridizations at the central atom are respectively :

Match the LIST-I with LIST-II . Choose the correct answer from the options given below :

Given below are two statements: Statement (I) : for ClF_3 , all three possible structures may be drawn as follows. Statement (II) : Structure III is most stable, as the orbitals

A metal complex with a formula MC ℓ_4 · 3 NH_3 is involved in sp^3 ~d^2 hybridisation. It upon reaction with excess of AgNO_3 solution gives ' x ' moles of AgCl. Consider ' x ' is

Which of the following molecules(s) show/s paramagnetic behavior? (A) O_2 (B) N_2 (C) F_2 (D) S_2 (E) Cl_2 Choose the correct answer from the options given below :

In 3, 3-dimethylhex-1-ene-4-yne, there are _______ sp^3 , _______ sp^2 and _______ sp hybridised carbon atoms respectively :

Which among the following molecules is (a) involved in sp^3 ~d hybridization, (b) has different bond lengths and (c) has lone pair of electrons on the central atom?

Among \(SO_2, NF_3, NH_3, XeF_2, ClF_3\) and \(SF_4\), the hybridization of the molecule with non-zero dipole moment and highest number of lone-pairs of electrons on the central

A molecule with the formula \(AX_4 Y\) has all it's elements from p-block. Element A is rarest, monoatomic, non-radioactive from its group and has the lowest ionization enthalpy

Total number of sigma ( σ ) and pi(π) bonds respectively present in hex-1-en-4-yne are :

The correct option with order of melting points of the pairs \((Mn, Fe),(Tc, Ru)\) and \((Re, Os)\) is :

The sum of sigma \((σ)\) and pi \((π)\) bonds in Hex-1,3-dien-5-yne is _______.

Total number of molecules/species from following which will be paramagnetic is ______ O_2, O_2^ + , O_2^ - , NO, NO_2, CO, K_2[NiCl_4],[Co(NH_3)_6] Cl_3, ~K_2[Ni(CN)_4]

The molecules having square pyramidal geometry are

Given below are two statements : Statement (I): Experimentally determined oxygen-oxygen bond lengths in the O_3 are found to be same and the bond length is greater than that of a

Given below are two statements : Statement (I) : The first ionization energy of Pb is greater than that of Sn . Statement (II) : The first ionization energy of Ge is greater than

In the given structure, number of sp and sp^2 hybridized carbon atoms present respectively are :

Which of the following statement is true with respect to H_2 O, NH_3 and CH_4 ? A. The central atoms of all the molecules are sp^3 hybridized. B. The H-O-H, H-N-H and H-C-H angles

Which of the following linear combination of atomic orbitals will lead to formation of molecular orbitals in homonuclear diatomic molecules [internuclear axis in z -direction] ?

Match the LIST-I with LIST-II Choose the correct answer from the options given below:

Arrange the following compounds in increasing order of their dipole moment : HBr, H_2 ~S, NF_3 and CHCl_3

The number of molecules/ions that show linear geometry among the following is ________ SO_2, BeCl_2, CO_2, ~N_3^ - , NO_2, ~F_2 O, XeF_2, NO_2^ + , I_3^ - , O_3

The option(s) in which at least three molecules follow Octet Rule is(are)

Based on VSEPR model, match the xenon compounds given in List-I with the corresponding geometries and the number of lone pairs on xenon given in List-II and choose the correct

The correct increasing order for bond angles among \(BF_3, PF_3\) and \(ClF_3\) is :

The incorrect statement regarding ethyne is

Total number of electrons present in \((π^*)\) molecular orbitals of \(O_2, O_2 ^ + \) and \(O_2^ - \) is _______.

In which one of the following pairs the central atoms exhibit \(sp^2\) hybridization ?

The total number of species from the following in which one unpaired electron is present, is _______ \(N_2, O_2, C_2^ - , O_2^ - , O_2^ 2- , H_2^ + , CN^ - , He_2^ + \)

The shape of carbocation is :

When \(ψ_ A \) and \(ψ_ B \) are the wave functions of atomic orbitals, then \(σ^*\) is represented by :

Number of molecules having bond order 2 from the following molecules is ________ \(C_2, O_2, Be_2, Li_2, Ne_2, ~N_2, He_2\)

Match List I with List II \( List-I List-II (Molecule) (Shape) A. NH_3 I. Square pyramid B. BrF_5 II. Tetrahedral C. PCl_5 III. Trigonal pyramidal D. CH_4 IV. Trigonal bipyramidal

Match List I with List II \( List-I List-II (Molecule) (Shape) A. Fe_4 [ Fe(CN)_6]_3 · xH_2 O I. Violet B. [ Fe(CN)_5 NOS^ 4- . II. Blood Red A C. [Fe(SCN)]^ 2+ III. Prussian Blue

Given below are two statements: Statement I: \(N(CH_3)_3\) and \(P(CH_3)_3\) can act as ligands to form transition metal complexes. Statement II: As N and P are from same group

Number of molecules from the following which are exceptions to octet rule is ______ \( CO _ 2 , NO _ 2 , H _ 2 SO _ 4 , BF _ 3 , CH _ 4 , SiF _ 4 , ClO _ 2 , PCl _ 5 , BeF _ 2 , C

An amine \(( X) \) is prepared by ammonolysis of benzyl chloride. On adding p-toluenesulphonyl chloride to it the solution remains clear. Molar mass of the amine (X) formed is

Match List I with List II \( List - I List - II (Hybridization) (Orientation in Space) A. sp^3 I. Trigonal bipyramidal B. dsp^2 II. Octahedral C. sp^3 d III. Tetrahedral D. sp^3

Match List I with List II \( List - I List - II (Compound/Species) (Shape/Geometry) A. SF_4 I. Tetrahedral B. BrF_3 II. Pyramidal C. BrO_3^ - III. See saw D. NH_4^ + ^ + KS IV.

Match List I with List II \( List - I List - II (Molecule/Species) (Property/Shape) A. SO_2 Cl_2 I. Paramagnetic B. NO II. Diamagnetic C. NO_2^ - III. Tetrahedral D. I_3^ - IV.

Number of molecules from the following which can exhibit hydrogen bonding is _______ (nearest integer)

Match List I with List II \( List - I List - II (A) ICl (I) T - shape (B) ICl_3 (II) pyramidal (C) ClF_5 (III) Pentagonal bipyramidal (D) IF_7 (IV) Linear \) Choose the correct

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : \(NH_3\) and \(NF_3\) molecule have pyramidal shape with

Number of compounds from the following with zero dipole moment is ______ \( HF, H _ 2 , H _ 2 ~S, CO _ 2 , NH _ 3 , BF _ 3 , CH _ 4 , CHCl _ 3 , SiF _ 4 , H _ 2 O, BeF _ 2 \)

In the lewis dot structure for \(NO_2^ - \), total number of valence electrons around nitrogen is _______

The correct statement/s about Hydrogen bonding is/are A. Hydrogen bonding exists when \( H \) is covalently bonded to the highly electro negative atom. B. Intermolecular \( H \)

The number of species from the following that have pyramidal geometry around the central atom is _______. \(S_2 O_3^ 2- , SO_4^ 2- , SO_3^ 2- , S_2 O_7^ 2- \)

Number of compounds / species from the following with non-zero dipole moment is ______ \(BeCl _ 2 , BCl _ 3 , NF _ 3 , XeF _ 4 , CCl _ 4 , H _ 2 O, H _ 2 S, HBr, CO _ 2 , H _ 2

Bromine trifluoride autoionizes to form BrF_2^ and BrF_4^ . The shapes of the cation and anion are respectively , and .

In 3, 3-dimethylhex-1-ene-4-yne, there are ___ sp^3 , _ sp^2 and _____ sp hybridised carbon atoms respectively :

Given below are two statements : One is labelled as AssertionA and the other is labelled as ReasonR . AssertionA: Butan– 1 –ol has higher boiling point than