Question

Existem espécies isoeletronicas entre Mg (Z=12) , Mg²+ , O (Z = 8) , O²-

Answer 1

$e ^{-} (Mg ^{2+})=10=Ne \\ \\e ^{-}(O ^{2-})=10=Ne \\ \\ O ^{-2}=Mg ^{2+}=Ne$