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Which of the following wavelengths are n...

Which of the following wavelengths are not possible for an electron of `He^(+)` in any of its Bohr orbit?
`["Assume": h= 6.626xx10^(-34) J-sec, M_(e)=9.1xx10^(-3)]`

A

1.5 Å

B

`sqrt(150/10.2) Å`

C

`sqrt(150/3.4) nm`

D

`h/(m_(e)xx3xx10^(8)) m `

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