In the following sets of ions, which one is not isoelectronic with the rest of the species? O2-, F- , Na, Mg2+, Al3+, Ne

Question

In the following sets of ions, which one is not isoelectronic with the rest of the species? O2-, F- , Na, Mg2+, Al3+, Ne  (A) Mg2+  (B) Al3+ (C) O2-  (D) Na

Tardigrade Admin · Accepted Answer

O2- (10e-), F-(10 e-), Na(11 e-), Mg2+(10 e-), Al3+(10 e-) and Ne(10 e-) . Thus, Na is not isoelectronic with the rest of the species.

Q. In the following sets of ions, which one is not isoelectronic with the rest of the species?
$O^{2 -}, F^{-}, N a, M g^{2 +}, A l^{3 +}, N e$

$M g^{2 +}$

$A l^{3 +}$

$O^{2 -}$

$N a$

$O^{2 -} (10 e^{-}), F^{-} (10 e^{-}), N a (11 e^{-}), M g^{2 +} (10 e^{-}), A l^{3 +} (10 e^{-})$ and $N e (10 e^{-})$ .
Thus, Na is not isoelectronic with the rest of the species.

Q. In the following sets of ions, which one is not isoelectronic with the rest of the species? O2−,F−,Na,Mg2+,Al3+,Ne

Mg2+

Al3+

O2−

Na