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The radius of hydrogen atom in its groun...

The radius of hydrogen atom in its ground state is `5.3 xx 10^(-11)m`. After collision with an electron it is found to have a radius of `21.2 xx 10^(-11)m`. What is the principle quantum number of `n` of the final state of the atom ?

A

n = 4

B

n = 2

C

n = 16

D

n = 3

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The correct Answer is:
B
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NTA MOCK TESTS-NTA NEET SET 48-PHYSICS
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