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In a mixture of H- He^(+) gas (He+ is si...

In a mixture of `H- He^(+)` gas (`He+ `is singly ionized He atom), `H` atom and `He+` ions are excited to their respective first excited state. Subsequently `H` atoms transfer their total excitation energy to `He+` ions (by collisions) Assume that the bohr model of atom is exactly valid.
The wavelength of light emitted in the visible region by `He+` lons after collisions with `H` atoms is -

A

`6.5 xx 10^(-7) m`

B

` 5.6 xx 10^(-7) m`

C

` 4.8 xx 10^(-7) m `

D

`4.0 xx 10^(-7) m`

Text Solution

Verified by Experts

The correct Answer is:
C
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