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A neutron beam, in which each neutron ha...

A neutron beam, in which each neutron has same kinetic energy, is passed through a sample of hydrogen like gas (but not hydrogen) in ground state and at rest. Due to collision of neutrons with the ions of the gas, ions are excited and then they emit photons. Six spectral lines are obtained in which one of the lines is of wavelength (6200/51) nm.Which gas is this?

A

`H`

B

`D`

C

`He^(++)`

D

`Li^(+2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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