Question

which of the following pairs is not isoelctronic 1) Na + and Na
2) Mg 2+ and Ne
3)Al 3+ and B 3+
4) P 3- and N 3-
​

Answer 1

Answer:

Explanation:

Only Mg2+ and Ne are isoelectronic in the followings options. Because Mg2+ and Ne both have ten electrons.