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Energy of an electron is given by E=-2...

Energy of an electron is given by
`E=-2.178'10^(-18)J`
Wavelength of light required to excite 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

`6.500xx10^(-7)m`

B

`8.500xx10^(-7)m`

C

`1.214xx10^(-7)m`

D

`2.816xx10^(-7)m`

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