Be^(2+) is isoelectronic with which of the following ions ?

1.	Be^(2+) is isoelectronic with which of the following ions ?
Answer» `H^(+)` `LI^(+)` `Na^(+)` `Mg^(2+)` Solution :Both `Be^(2+)` and `Li^(+)` have two ELECTRONS `(1 s^(2))` and hence are isoelectronic .

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