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The most probable radius (in pm) for fin...

The most probable radius (in pm) for finding the electron in `He^(+)` is

A

0

B

`52.9`

C

`26.5`

D

`105.8`

Text Solution

Verified by Experts

The correct Answer is:
C
Radius of first orbit in `He^(+)`,
`r = (n^(2))/(Z) xx 0.529 xx 10^(-10)` ltbr. `n = (1^(2) xx 0.529 xx 10^(-10)m)/(2)`
`= 0.2645 xx 10^(-10)m = 2.645 xx 10^(-11) m`
`= 2.645 xx 10^(-11) xx 10^(12) "pm" = 26.45 "pm"`
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