The electron in a hydrogen atom jumps back from an excited state to ground state by emitting a photon of wavelength λ o = 16 15 R , where R is Rydberg's constant. In place of emitting one photon, the electron could come back to ground state by

emitting 3 photons of wavelengths λ 1 , λ 2 and λ 3 , such that 1 λ 1 + 1 λ 2 + 1 λ 3 = 15 R 16

emitting 2 photons of wavelengths λ 1 and λ 2 , such that 1 λ 1 + 1 λ 2 = 15 R 8

emitting 2 photons of wavelengths λ 1 and λ 2 , such that λ 1 + λ 2 = 16 15 R

emitting 3 photons of wavelengths λ 1 , λ 2 and λ 3 , such that λ 1 + λ 2 + λ 3 = 16 15 R

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A particular hydrogen-like atom has its ground state binding energy $122.4 eV$ . It is in ground state. Then select the incorrect option.

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Important Questions on Atoms

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Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 39

In the hydrogen atom, if the reference level of potential energy is assumed to be zero at the ground state level, then choose the incorrect statement.

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Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 40

α

particle after passing through a potential difference of $V$

volt

collides with a nucleus. If the atomic number of the nucleus is

Z

, then the distance of closest approach of

α

-particle to the nucleus will be

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Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 41

An electron jumps from some

n

value to the ground state in (i) hydrogen atom and (ii) in singly ionized helium atom. Then the ratio of wavelengths of the emitted photons in the two cases would be

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Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 42

Which of the following transitions in hydrogen atoms emits photons of highest frequency?

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Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 43

The electron in a hydrogen atom jumps back from an excited state to ground state by emitting a photon of wavelength

λ_{o} = \frac{16}{15 R}

, where

R

is Rydberg's constant. In place of emitting one photon, the electron could come back to ground state by

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Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 44

The electron in a hydrogen atom makes a transition from

n = n_{1}

n = n_{2}

state. The time period of the electron in state

n_{1}

is eight times that in state

n_{2}

. The possible values of

n_{1}

and

n_{2}

are

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Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 45

When an electron in the hydrogen atom in ground state absorbs a photon of energy $12.1 eV$ , its angular momentum

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Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 46

The radius of a hydrogen atom in the ground state is

5.3 \times 10^{- 11} m

. If this atom collides with an electron, then its values becomes

21.2 \times 10^{- 11} m

. The value of the principal quantum number will be

A particular hydrogen-like atom has its ground state binding energy 122.4 eV. It is in ground state. Then select the incorrect option.

Important Questions on Atoms

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A particular hydrogen-like atom has its ground state binding energy $122.4 eV$ . It is in ground state. Then select the incorrect option.