In a mixture of `H- He^(+)` gas (`He+ `is singly ionized He atom), `H` atom and `He+` ions are excited to their respective first sxcited state subequendy `H` atoms transfer their total excilation energy to `He+` ions (by collsions) Assume that the bohr model of atom is exactly veld. The ratio of the kinetic energy of the `n = 2` electron for the `H` atom to the of `He^(+)` lon is -
A
`14`
B
`1//2`
C
`1`
D
`2`
Text Solution
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The correct Answer is:
A
`K.E. thehydrogen atom` (for n = 2 ) = (+ 13.6 xx 1^(2))/(4) eV` K.E. for `He^(+) (for n= 2 ) = (13.6 xx 2^(2))/(2^(2)) eV` = 13.6 eV` `Radio = (1)/(4)`
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