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First orbit velocity of electron is $2.1 \times 10^{6} m s^{- 1}$ , then the velocity of $3^{rd}$ orbit electron is

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Important Questions on Atoms, Molecules and Nuclei

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 12 - Atoms, Molecules and Nuclei>Competitive Thinking>Q 15

The ionization potential of a hydrogen atom is

13.6 eV .

What will be the energy of the atom corresponding to

n = 2 ?

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 12 - Atoms, Molecules and Nuclei>Competitive Thinking>Q 16

Energy

E

of a hydrogen atom with principal quantum number n is given by

E = \frac{- 13.6}{n^{2}} eV

. The energy of a photon ejected when the electron jumps from

n = 3

state to

n = 2

state of hydrogen is approximately

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 12 - Atoms, Molecules and Nuclei>Competitive Thinking>Q 17

For the hydrogen atom, the energy of radiation emitted in the transition from

4^{th}

excited state to

2^{nd}

excited state, according to Bohr's theory is

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 12 - Atoms, Molecules and Nuclei>Competitive Thinking>Q 18

Energy required for the electron excitation in

{Li}^{+ +}

from the first to the third Bohr orbit is

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 12 - Atoms, Molecules and Nuclei>Competitive Thinking>Q 19

The ionisation potential of hydrogen atom is

13.6 V

. The energy required to remove an electron in the

n = 2

state of the hydrogen atom is

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IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 12 - Atoms, Molecules and Nuclei>Competitive Thinking>Q 20

An electron collides with a hydrogen atom in its ground state and excites it to

n = 3

state. The energy given to the hydrogen atom in this inelastic collision (neglecting the recoil of hydrogen atom) is

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 12 - Atoms, Molecules and Nuclei>Competitive Thinking>Q 21

The ground state energy of hydrogen atom is

- 13.6 eV

. What is the potential energy of the electron in this state?

EASY

MHT-CET

IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 12 - Atoms, Molecules and Nuclei>Competitive Thinking>Q 22

The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, is

First orbit velocity of electron is 2.1×106m s-1, then the velocity of 3rd orbit electron is

Important Questions on Atoms, Molecules and Nuclei

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First orbit velocity of electron is $2.1 \times 10^{6} m s^{- 1}$ , then the velocity of $3^{rd}$ orbit electron is