Q 1449634513.     An electron is in an excited state in a hydrogen-like atom. It has a total energy of -3.4 eV.
The kinetic energy of the electron is 'E' and its de Broglie wavelength is `lambda`

A

`E = 6.8eV, lambda ~ 6.6xx10^-10m`

B

`E = 3.4eV, lambda ~ 6.6xx10^-10m`

C

`E = 3.4eV, lambda ~ 6.6xx10^-11m`

D

`E = 6.8eV, lambda ~ 6.6xx10^-11m`

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