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If an electron drops from 4th orbit to 2...

If an electron drops from 4th orbit to 2nd orbit in an H-atom, then

A

it gains 2.55 e V of potential energy

B

it gains 2.55 e V of total energy

C

it gains 2.55 e V of total energy.

D

it emits a 2.55 e V electron

Text Solution

Verified by Experts

The correct Answer is:
D
`E_(n) =-(13.6Z^2)/(n^2)e V, Delta E= E_(4)-E_(2)` .
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NARAYNA-ATOMS -EXERCISE -4
  1. The shortest wavelength of the Brackett series of a hydrogen-like ato...

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  2. According to Bohr's theory of hydrogen atom , the product of the bindi...

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  3. If an electron drops from 4th orbit to 2nd orbit in an H-atom, then

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  4. The enrgy of an atom (or ion) in the ground state is - 54.4 eV .If ma...

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  5. An atom absorb 2eVenergy and is excited to next energy state . The wav...

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  6. When an electron in the hydrogen atom in ground state absorb a photon ...

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  7. Magnetic field at the center (at nucleus) of the hydrogen like atom ("...

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  8. A neutron moving with a speed v makes a head-on collision with a hydro...

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  9. A charge particle is moving in a uniform magnetic field ib a circular...

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  10. An electron in hydrogen atom after absorbing an energy photon jumps fr...

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  11. The photon radiated from hydrogen corresponding to 2^(nd) of Lyman ser...

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  12. In a hypothetical system , a partical of mass m and charge -3 q is mov...

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  13. Consider a hydrogen-like atom whose energy in nth excited state is giv...

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  14. 29 electrons are removed from Zn-atom (Z=30)by certain means. The mini...

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  15. The ionisation energy of Li^(2+) atom in ground state is,

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  16. A photon of energy 15eV collides with H-atom. Due to this collision, H...

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  17. Monochromatic radiation of wavelength lambda is incident on a hydrogen...

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  18. The follwing diagram indicates the energy levels of a certain atom whe...

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  19. When the electron in a hydrogen atom jumps from the second orbit to th...

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  20. The ratio of the largest to shortest wavelength in Balmer series of hy...

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