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JEE Structure of Atom PYQs with Solutions

50 previous year questions from Structure of Atom (JEE Main & Advanced NSEC) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

50 questionsNSECAnswers + solutions

About Structure of Atom PYQs

Structure of Atom has 50 previous year questions in the Quantrex Academy JEE Main & Advanced NSEC bank. The 50 questions in this list come from Olympiad workbook (50). Each question opens on its own page with the options, the correct answer and the worked solution where available.

Structure of Atom questions with solutions

1

If the radius of the hydrogen atom is 53 pm , the radius of the He^ + ion is close to

Olympiad workbook Solution View → 2

An electron present in the third excited state of a H atom returns to the first excited state and then to the ground state. If λ_1 and λ_2 are the wavelengths of light emitted in

Olympiad workbook Solution View → 3

The ratio of the energy of the electron in ground state of hydrogen atom to that of the electron in the first excited state of Be^ 3+ is

Olympiad workbook Solution View → 4

When a certain metal was irradiated with light of frequency 3.2 × 10^ 16 ~Hz , the photoelectrons emitted had twice the kinetic energy as did the photoelectrons emitted when the

Olympiad workbook Solution View → 5

An orbital among the following that has two radial nodes and two angular nodes is

Olympiad workbook Solution View → 6

Decay of radioisotopes follows first order kinetics. Radioisotope U^ 238 undergoes decay to a stable isotope, Th^ 234 . The ratio of the number of atoms of U^ 238 to that of Th^

Olympiad workbook Solution View → 7

For which of the following processes, carried out in free space, energy will be absorbed? I. Separating an electron from an electron II. Removing an electron from a neutral atom

Olympiad workbook Solution View → 8

Which of the following elements will exhibit photoelectric effect with light of the longest wavelength?

Olympiad workbook Solution View → 9

An electron beam can undergo diffraction by crystals which proves the wave nature of electrons. The potential required for a beam of electrons to be accelerated so that its

Olympiad workbook Solution View → 10

The electrons identified by quantum numbers n and l , (i) n=4, l=1 , (ii) n=4, l=0 , (iii) n=3, l=2 , (iv) n=3, l=1 can be placed in order of increasing energy from lowest to

Olympiad workbook Solution View → 11

The statement that is NOT correct about atomic spectra is

Olympiad workbook Solution View → 12

The current produced due to photoelectric effect

Olympiad workbook Solution View → 13

The correct statement/s among the following is/are:

Olympiad workbook Solution View → 14

The plots of energy density (energy per unit area) vs wavelength for blackbody radiation at various temperatures is given below. The correct option among the following is: (i)

Olympiad workbook Solution View → 15

The unit of Planck's constant, 'h', is the same as that of

Olympiad workbook Solution View → 16

The kinetic energy of the photoelectrons ejected by a metal surface increased from 0.6 eV to 0.9 eV when the energy of the incident photons was increased by 20 \% . The work

Olympiad workbook Solution View → 17

An ionic species, M^ 3+ , is isoelectronic with CuCl_2 and has ( Z+2 ) neutrons. The molar mass of M^ 3+ is

Olympiad workbook Solution View → 18

The property of radiation that is not different at various regions of the electromagnetic spectrum is:

Olympiad workbook Solution View → 19

Maximum number of electrons with m_ s =1 / 2 which can be accommodated in subshells having total three nodes is

Olympiad workbook Solution View → 20

The electronic transition in He^ + ion that will occur at the same wavelength as that of the n=2 to n=1 transition in H atom is

Olympiad workbook Solution View → 21

The energy of an electron in the ground state of H atom is -13.6 eV . The negative sign indicates that

Olympiad workbook Solution View → 22

The power and wavelength emitted by a laser pointer commonly used in Power Point presentations are 1.0 mW and 670 nm respectively. Number of photons emitted by this pointer during

Olympiad workbook Solution View → 23

The energy of an electron in Bohr's orbit of hydrogen atom is -13.6 eV . The total electronic energy of a 'hypothetical' He atom in which there are no electron electron repulsions

Olympiad workbook Solution View → 24

The ionization energy of a certain element is 412 ~kJ ~mol^ -1 . When the atoms of this element are in the first excited state, however, the ionization energy is only 126 ~kJ

Olympiad workbook Solution View → 25

The kinetic energy of an electron that has a wavelength of 10 nm is

Olympiad workbook Solution View → 26

When a certain metal was irradiated with light of frequency 3.2 × 10^ 16 ~Hz , the photoelectrons emitted had twice the kinetic energy as did the photoelectrons emitted when the

Olympiad workbook Solution View → 27

The electrons identified by quantum numbers n and l , (i) n=4, l=1 , (ii) n=4, l=0 , (iii) n=3, l=2 , (iv) n=3, l=1 can be placed in order of increasing energy from lowest to

Olympiad workbook Solution View → 28

The kinetic energy of an electron that has a wavelength of 10 nm is

Olympiad workbook Solution View → 29

An electron beam can undergo diffraction by crystals which proves the wave nature of electrons. The potential required for a beam of electrons to be accelerated so that its

Olympiad workbook Solution View → 30

The ionization energy of a certain element is 412 ~kJ ~mol^ -1 . When the atoms of this element are in the first excited state, however, the ionization energy is only 126 ~kJ

Olympiad workbook Solution View → 31

The energy of an electron in Bohr's orbit of hydrogen atom is -13.6 eV . The total electronic energy of a 'hypothetical' He atom in which there are no electron electron repulsions

Olympiad workbook Solution View → 32

The ratio of the energy of the electron in ground state of hydrogen atom to that of the electron in the first excited state of Be^ 3+ is

Olympiad workbook Solution View → 33

The energy of an electron in the ground state of H atom is -13.6 eV . The negative sign indicates that

Olympiad workbook Solution View → 34

Which of the following elements will exhibit photoelectric effect with light of the longest wavelength?

Olympiad workbook Solution View → 35

If the radius of the hydrogen atom is 53 pm , the radius of the He^ + ion is close to

Olympiad workbook Solution View → 36

The power and wavelength emitted by a laser pointer commonly used in Power Point presentations are 1.0 mW and 670 nm respectively. Number of photons emitted by this pointer during

Olympiad workbook Solution View → 37

An electron present in the third excited state of a H atom returns to the first excited state and then to the ground state. If λ_1 and λ_2 are the wavelengths of light emitted in

Olympiad workbook Solution View → 38

An orbital among the following that has two radial nodes and two angular nodes is

Olympiad workbook Solution View → 39

Decay of radioisotopes follows first order kinetics. Radioisotope U^ 238 undergoes decay to a stable isotope, Th^ 234 . The ratio of the number of atoms of U^ 238 to that of Th^

Olympiad workbook Solution View → 40

For which of the following processes, carried out in free space, energy will be absorbed? I. Separating an electron from an electron II. Removing an electron from a neutral atom

Olympiad workbook Solution View → 41

The kinetic energy of the photoelectrons ejected by a metal surface increased from 0.6 eV to 0.9 eV when the energy of the incident photons was increased by 20 \% . The work

Olympiad workbook Solution View → 42

The unit of Planck's constant, 'h', is the same as that of

Olympiad workbook Solution View → 43

The statement that is NOT correct about atomic spectra is

Olympiad workbook Solution View → 44

The electronic transition in He^ + ion that will occur at the same wavelength as that of the n=2 to n=1 transition in H atom is

Olympiad workbook Solution View → 45

An ionic species, M^ 3+ , is isoelectronic with CuCl_2 and has ( Z+2 ) neutrons. The molar mass of M^ 3+ is

Olympiad workbook Solution View → 46

Maximum number of electrons with m_ s =1 / 2 which can be accommodated in subshells having total three nodes is

Olympiad workbook Solution View → 47

The property of radiation that is not different at various regions of the electromagnetic spectrum is:

Olympiad workbook Solution View → 48

The current produced due to photoelectric effect

Olympiad workbook Solution View → 49

The correct statement/s among the following is/are:

Olympiad workbook Solution View → 50

The plots of energy density (energy per unit area) vs wavelength for blackbody radiation at various temperatures is given below. The correct option among the following is: (i)

Olympiad workbook Solution View →
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Main Structure of Atom list

The larger JEE Structure of Atom list is under Chemistry (526 questions).

Related JEE NSEC chapters

Some Basic Concepts of Chemistry (60)Electrochemistry (52)Thermodynamics (C) (50)General Organic Chemistry (44)Chemical Kinetics (42)Chemical Bonding and Molecular Structure (34)Coordination Compounds (33)Hydrocarbons (29)Solid State (22)Ionic Equilibrium (20)Alcohols Phenols and Ethers (19)Solutions (18)

Structure of Atom in other exams

NEET Structure of Atom (785)BITSAT Structure of Atom (27)