1.

In an electron transition of hydrogen atom orbital momentum may change by :

Answer»

Hund.s RULE
`h/pi`
`h/(2pi)`
`h/(4pi)`

SOLUTION :Change in ANGULAR MOMENTUM `=(n_2- n_1) = h/(2pi)`
POSSIBLE values will be `h/(pi) , h/(2pi) , 3/(2pi) ,….`
(h and `h/(pi)` are not possible )


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