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The wave number of the first line of Ba...

The wave number of the first line of Balmer series of hydrogen is `15200 cm ^(-1)` The wave number of the first Balmer line of `Li^(2+)` ion is

A

`15200 cm^-1`

B

`60800 cm^-1`

C

`76000 cm^-1`

D

`136800 cm^-1`

Text Solution

Verified by Experts

The correct Answer is:
D
(d) `overline v(Li^(2+)) = z^2 xx 15200 cm^-1`
=`3^2 xx 15200 cm^-1`
=`9 xx 15200 cm^-1`
=`136800 cm^-1`.
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