Question

Select the electronic transition for a hydrogen atom that are either ultraviolet absorption or ultraviolet emissions

Answer 1

There are following transition series in case of hydrogen spectrum

a) Lyman series : it is when electron transit from n1= 2 to n2= 3,4 ,5 .....

It falls in UV region

b) Balmer series : it is when electron transit from n1= 2 to n2= 3,4 ,5 .....

It falls in visible region

c) pachen series : it is when electron transit from n1= 3 to n2= 4 ,5 .....

It falls in IR band

d) Brackett : it is when electron transit from n1= 4 to n2= 5,6,7 .....

It falls in Ir band

and so on

As asked we have assign ultraviolet absorption : n1 = 1 to n1= 2,3,4,5

ultraviolet emission: n2 = 2,3,4,5..... to n1= 1