1.

He^(+) ions are excited to respective first excited states. Subsequently, H-atoms transfer their total excitation Energy to Het jons 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

Answer»

`1/4`
`1/2`
1
2

Solution :`KE alpha Z^(2)//N^(2)`
`(KE_(H))/(KE_(He))=((Z_(H))/(2) "/" (Z_(He))/(2))^(2)=1/4`


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