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Hydrogen ion H^(-) is isoelectronic with...

Hydrogen ion `H^(-)` is isoelectronic with

A

Li

B

He

C

`H^(+)`

D

`Li^(-)`

Text Solution

Verified by Experts

The correct Answer is:
B
`H^(-)= 1s^(2),He=1s^(2)`
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