Which one of the following electromagnetic radiations are not emitted during electron transition in H -atom?
A
-rays
B
UV rays
C
IR rays
D
Visible light
Text Solution
Verified by ExpertsThe correct answer is:
A
In the hydrogen atom, electronic transitions produce photons whose energies fall in these regions:
Lyman series → UV
Balmer series → Visible
Paschen, Brackett, Pfund → IR
But 
-rays require much higher energy transitions (nuclear scale), not electronic transitions in H -atom.
So, 
-rays are not emitted during electron transitions in the hydrogen atom.
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