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In an excited state of hydrogen like ato...

In an excited state of hydrogen like atom an electron has total energy of `-3.4 eV`. If the kinetic energy of the electron is E and its de-Broglie wavelength is `lambda`, then

A

`E=6.8 eV ,lamda~6.6xx10^(-10) m`

B

`E=3.4 eV ,lamda~6.6xx10^(-10) m`

C

`E=3.4 eV ,lamda~6.6xx10^(-11) m`

D

`E=6.8 eV ,lamda~6.6xx10^(-11) m`

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The correct Answer is:
b
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