Energy of electron in nth orbit of Hydrogen atom | Numericals by Physics Advocate

Q1.

How much energy is needed to relocate an electron from first excited state to fourth excited state in an Hydrogen atom? Also, find the type of light needed in this process.

Q2.

Find the wavelength of light released when an electron jumped from 4th excited state to ground state in an Hydrogen atom. Also, name the series.

Q3.

Find the wavenumber of light released when an electron jumped from 5th excited state in bracket series (in H - atom).

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Q4.

An electron absorbed 2.55 eV energy and jumped from first excited state to nth excited state. Find n.

Q5.

when an electron jumped from second excited state to some different state, UV ray was released. Name the state and find the frequency of the UV ray.

Q6.

The ratio of the frequencies of the long wavelength limits of Lyman and Balmer series of hydrogen spectrum is ___.

Q7.

A hydrogen atom in its ground state absorbs 10.2 eV of energy. The orbital angular momentum is increased by ___.

Q8.

The wavelength of radiation emitted is λ when an electron jumps from the third to the second orbit of the hydrogen atom. For the electron jump from the fourth to the second orbit of the hydrogen atom, the wavelength of radiation emitted will be ___.

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ANSWERS

Ans1. 2.86 eV

Ans2. 99 nm

Ans3. 0.375 × 10⁶ m-¹

Ans4. n = 3

Ans5. 2.90 × 10¹⁵ Hz

Ans6. 27:5

Ans7. 1.05 × 10-³⁴ Js

Ans8. 20λ/27

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