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The radius of hydrogen atom in its groun...

The radius of hydrogen atom in its ground state is `5.3xx10^(-11)m`. After collision with an electron it is found to have a radius of `21.2xx10^(-11)m`. What is the principal quantum number n of the final state of atom ?

A

n = 4

B

n = 2

C

n = 16

D

n = 3

Text Solution

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The correct Answer is:
B
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