Q. A hydrogen atom is in the excited state, then:

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A

the maximum number of emitted photons will be 10

B

the maximum number of emitted photons will be 6

C

it can emit three photons in ultraviolet region

D

if an infrared photon is generated, then a visible photon may follow this infrared photon

Solution:

The hydrogen atom is in state.
Thus maximum number of possible photons .
To emit photon in ultra violet region, it must jump to , because only Lyman series lies in UV region.
Once it jumps to photon, it reaches to its ground state and no more photons can be emitted.
So only one photon in range can be emitted.
If atom emits a photon and then another photon of Balmer series, option D will be correct.

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4. Muon is a negatively charged particle with a mass me, where me is the mass of the electron and e is the electronic charge. If - is bound to a proton to form a hydrogen like atom, identify the correct statements.
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(B) The speed of the in the orbit is times that of the electron in the orbit.
(C) The ionization energy of muonic atom is times more than that of an hydrogen atom.
(D) The momentum of the muon in the orbit is times more than that of the electron.

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