In a mixture of `H - He^+` gas (`He^+` ` ` is singly ionized He atom), H atoms and `He^+` ions are excited to their respective first excited states. Subsequently, H atoms transfer their total excitation energy to `He^+` ions (by collisions). Assume that the Bohr model of atom is exactly valid.
The ratio of the kinetic energy of the n = 2 electron for the H atom to that of `He^+` ion is
```1/4`
`1/2`
1
2