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What is likely to be principal quantum n...

What is likely to be principal quantum number for a circular orbit of diameter `20.6nm` of the hydrogen atom. If we assume Bohr orbit to be the same as that represented by the principal quantum number?

A

10

B

14

C

12

D

16

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The correct Answer is:
B
`r_(n) = 0.529 xx n^(2)A^(@)`, diameter =` 2r, r =("diameter")/(2)`
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