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Energy of an electron is givem by E = - ...

Energy of an electron is givem by `E = - 2.178 xx 10^-18 J ((Z^2)/(n^2))`. Wavelength of light required to excited an electron in an hydrogen atom from level `n = 1` to `n = 2` will be
`(h = 6.62 xx 10^-34 Js` and `c = 3.0 xx 10^8 ms^-1`).

A

`2.816 xx 10^(−7)` m

B

`6.500 xx 10^(−7)` m

C

`8.500 xx 10^(−7)` m

D

`1.214 xx 10^(−7)` m

Text Solution

Verified by Experts

The correct Answer is:
D
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