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The least stable ion among the following...

The least stable ion among the following is

A

`Li^(o+)`

B

`B^(ɵ)`

C

`C^(ɵ)`

D

`Be^(ɵ)`

Text Solution

Verified by Experts

The correct Answer is:
D
`Li = 1s^(2) 2s^(1), Be = 1s^(2), 2s^(2), B = 1s^(@), 2s^(2), 2p^(1)`, `C = 1s^(2), 2s^(2)2p^(2)`.
`Be` is highly stable due to filled s-orbitals, therefore `Be^(ɵ)` is highly unstable.
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