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Which one of the following is expected t...

Which one of the following is expected to have largest size?

A

`F^(-)`

B

`O^(-2)`

C

`Al^(+3)`

D

`N^(-3)`

Text Solution

Verified by Experts

The correct Answer is:
D
Due to having three atomic size increases .
`F^(-) = 9+1 = 10` electrons, `O_(-2) = 8+2=10` electrons `Al^(+3) = 13-3 = 10` electrons `N^(3-) = 7+3 =10e^(-)`
Because electrostaic force between nucleus and `bar(e)` cloud is least in nitrogen.
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