If the de Broglie wavelength of the elec...

If the de Broglie wavelength of the electron in `n^(th)` Bohr orbit in a hydrogenic atom is equal to `1.5pia_(0)(a_(0)` is bohr radius), then the value of `n//z` is :

A

`0.75 `

B

`0.40`

C

`1.0 `

D

`1.50`

Verified by Experts

The correct Answer is:

A

`2pi r =nlamda` or `2pi a_0 (n^2)/Z =nlamda`
`2pi a_0 (n^2)/Z =n1.5pia_0`
or `n/Z=(1.5)/2 =3/4=0.75`

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