N^(3-),O^(2-),F^-,Na^+, Mg^(2+),Al^(3+) what is comman in them ?

1.	N^(3-),O^(2-),F^-,Na^+, Mg^(2+),Al^(3+) what is comman in them ?
Answer» SOLUTION :They are ISOELECTRONIC (10 ELECTRONS).

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