NEET PYQ Structure of Atom - Chapter-wise Questions with Solutions

About Structure of Atom PYQs

Structure of Atom has 785 previous year questions in the Quantrex Academy NEET UG Chemistry bank. The 220 questions in this list come from NEET (113), AIIMS (54), JIPMER (41) and 1 other source, spanning 2001 to 2026. Each question opens on its own page with the options, the correct answer and the worked solution where available.

NEET Structure of Atom PYQs with Solutions

About Structure of Atom PYQs

Questions by year (this list)

Structure of Atom questions with solutions

Identify the pair of atoms of elements as isotones from the following.

Which of the following elements has an electronic configuration, [Ar]\ 4s^2 ?

Calculate the energy per mole of photons of red light with a wavelength 750 nm. [h = 6.626 × 10^ -34 Js, C = 3 × 10^8 m/s.]

Calculate the energy associated with an electron in the first orbit of hydrogen atom?

Find the wave number of the 4^ th line in the Lyman series of H spectrum. (R = Rydberg constant)

Calculate the de-Broglie wavelength of an electron having velocity 1000\ ^ -1 [ h = 6.626 × 10^ -34 \ js , mass of an electron = 9.1 × 10^ -31 \ kg ]

How many total number of s and p electrons are respectively present in Cl^- ?

Visible light has a wavelength of 700 nm. Calculate its frequency in hertz.

Calculate the wavelength, wavenumber of photon having its energy 8.0 × 10^ -19 \ J . [h = 6.626 × 10^ -34 \ J s,\ C = 3.0 × 10^8\ m s^ -1 ]

Which of the following representation of atomic orbitals is CORRECT regarding dependance of orbital energy on (n+l) rule?

Identify a correct set of quantum numbers that represents the highest energy of an electron in an orbital from following.

What is the total number of electrons present in completely filled 3s, 3p, and 3d subshell having same value of magnetic quantum number?

A bulb is rated at 150 watt, converting 8\% energy into light. If energy of one photon is 4.42 × 10^ -19 J, how many photons are emitted by the bulb per second ?

Consider the following schematic plots of orbital wavefunction ( ψ_r ) against distance ( r ) from the nucleus. The figure representing two radial nodes in the orbital is

Match List I with List II : List I (Quantum Numbers) List II (Orbital) 'n' 'l' A. 2 1 I. 3d B. 4 0 II. 2p C. 5 3 III. 4s D. 3 2 IV. 5f Choose the correct answer from the options

The ratio of the wavelengths of the light absorbed by a Hydrogen atom when it undergoes n=2 arrow n=3 and n=4 arrow n=6 transitions, respectively, is

Energy and radius of first Bohr orbit of He^ + and Li^ 2+ are [Given R_ H =2.18 × 10^ -18 ~J, a_0=52.9 pm ]

Given below are two statements: Statement I: The Balmer spectral line for H atom with lowest energy is locateld at (5)/(36) R_H ~cm^ -1 . (R_ H =. Rydberg constant ) Statement II

The quantum numbers of four electrons are given below : I. n=4 ; I=2 ; m_1=-2 ; s=-(1)/(2) II. n=3 ; I=2 ; m_1=1 ; s=+(1)/(2) III. n=4 ; I=1 ; m_1=0 ; s=+(1)/(2) IV. n=3 ; I=1

The energy of an electron in the ground state (n=1) for He^ + ion is -x J , then that for an electron in n=2 state for Be^ 3+ ion in J is

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

Given below are two statements : Statement I : The value of wave function, ψ depends upon the coordinates of the electron in the atom. Statement II : The probability of finding an

Incorrect set of quantum numbers from the following is

Select the correct statements from the following : A. Atoms of all elements are composed of two fundamental particles. B. The mass of the electron is 9 . 10939 × 10 ^ - 31 kg . C.

A bulb is emitted electromagnetic radiation of 660 ~nm wavelength. The total energy of radiation is 3 × 10^ -18 ~J . The number of emitted photons will be (h=6.6 × 10^ -34 ~J ~s

Assertion : The chemical properties of different isotopes are same. Reason: Isotopes have same number of neutrons.

If n=2 for He^ + ion then find out the wave length.

Assertion : The free gaseous Cr atom has six unpaired electrons. Reason : Half-filled s -orbital has greater stability.

If two atoms have equal number of electron, it is called

Which of the following is not iso electronic with H_2 ~S ?

Azimuthal quantum number (ℓ) defined

^ 19 F^ -1 ,~ ^ 16 O^ -2 ,~ ^ 20 Ne choose the correct statement

Hund's rule state that

Wavelength of a particular transition for H atom is 400 ~nm . What can be the wavelength of He^ + for the same transition?

The position of both an electron and helium atom is known within 1.0 ~nm . The momentum of the electron is known within 5.0 × 10^ -26 ~kg ~m ~s^ -1 . The minimum uncertainty in

What is the maximum wavelength of line of Balmer series of hydrogen spectrum? (R=1.09 × 10^7 ~m^ -1 )

Calculate the velocity of an electron placed in the second orbit of Li^ 2+ ion.

In the P^ 3- , S^ 2- and Cl^ - ions, the increasing order of size is

Assertion : Fine lines are observed in spectra if an atom is placed in a magnetic field. Reason : Degenerate orbitals split in the presence of magnetic field.

Number of photons emitted by a 100 ~W(Js^ -1 ) yellow lamp in 1.0 s is ( λ of yellow light is 560 nm )

Ionisation potential of hydrogen atom is 13.6 eV . Hydrogen atom in ground state is excited by monochromatic light of energy 12.1 eV . The spectral lines emitted by hydrogen

The AsF_5 molecule is trigonal bipyramidal. The hybrid orbitals used by the As atoms for bonding are

Among the following set of quantum numbers, the impossible set is

Match the type of series given in Column I with the wavelength range given in Column II and choose the correct option.

The electrons identified by quantum numbers n and l , are as follows I. n=4, l=1 II. n=4, l=0 III. n=3, l=2 IV. n=3, l=1 If we arrange them in order of increasing energy, i.e.

According to Bohr's theory, which of the following correctly represents the variation of energy and radius of an electron in n^ th orbit of H -atom?

Assertion : For hydrogen like species, energy of an electron in a particular orbit increases with increase in value of Z . Reason : Electronegativity decreases across a period.

Match the particle with its characteristic. Column I Column II A. α-particle (p) Slow moving B. Isobar (q) High penetration power C. γ-ray (r) Same atomic mass D. β-particle (s)

What will be the number of waves formed by a Bohr electron in one complete revolution in its second orbit?

The effective neutron capture radius of a nucleus having a cross-section of 1.0 barr is [Given, 1 barr =1.0 × 10^ -24 ~cm^2 ]

α -Particles can be detected by using

Which of the following arrangement is possible? array llll n & l & m & s array

Assertion : For Balmer series of hydrogen spectrum, the value n_1=2 and n_2=3,4,5 … . Reason : The value of n_2 for a line in Balmer series of hydrogen spectrum having the highest

In an atom, an electron is moving with a speed of 600 ~m / s with an accuracy of 0.005 \% . Certainty with which the position of the electron can be located is (Given, h=6.6 × 10^

The Vividh Bharti Station of All India Radio, Delhi, broadcasts on a frequency of 1,368 kHz (Kilohertz). Calculate the wavelength (λ) of the electromagnetic radiation emitted by

Choose the correctly paired gaseous cation and its magnetic (spin only) moment (in B.M.)

Which of the following pairs represent isotones?

Assertion: Co(IV) is known but Ni(IV) is not. Reason : Ni(IV) has d^4 electronic configuration.

An electron is moving in Bohr's fourth orbit. Its de-Broglie wave length is λ . What is the circumference of the fourth orbit?

If n=6 , the correct sequence for filling of electrons will be

A particle is moving 3 times faster than the speed of electron. If the ratio of wavelength of particle and electron is 1.8 × 10^ -4 , then particle is

Assertion : Number of radial and angular nodes for 3 p -orbital are 1,1 respectively. Reason : Number of radial and angular nodes depends only on principal quantum number.

Maximum number of electrons in a subshell of an atom determined by the following?

Assertion : Bohr model fails in case of multielectron species. Reason : It does not mention electron-electron interactions.

Assertion : The spectrum of He^ + is expected to be similar to that of hydrogen. Reason : He^ + is also one electron system.

Threshold frequency of a metal is 5 × 10^ 13 ~s^ -1 upon which 1 × 10^ 14 ~s^ -1 frequency light is focused. Then the maximum kinetic energy of emitted electron is

In Bohr's orbit, (n h)/(2 π) indicates

Which one of the following sets of quantum numbers represents the highest energy level in an atom?

The ratio of the difference in energy between the first and the second Bohr orbit to that between the second and the third Bohr orbit is

Smallest wavelength occurs for

Which of the following is wrong for Bohr model?

A 600 W mercury lamp emits monochromatic radiation of wavelength 331.3 nm . How many photons are emitted from the lamp per second? (h=6.626 × 10^ -34 ~J-s.; velocity of light .=3

The number of electrons, neutrons and protons in a species are equal to 10,8 and 8 respectively. The proper symbol of the species is

Assume that you are travelling at a speed of 90 ~km / h in a small car with a mass of 1050 ~kg . If the uncertainty in the velocity of the car is 1 \%(Δ v=0.9 ~km / h) , what is

Assertion : The nuclear isomers are the atoms with the same atomic number and same mass number, but with different radioactive properties. Reason : The nucleus in the excited

Assertion : S.I. unit of atomic mass and molecular mass is kilograms. Reason : Atomic mass is equal to the mass of 6.023 × 10^ 24 atoms.