Question

Mg2+ is isoelectronic with

Answer 1

Answer:

sodium

Explanation:

mg2+ is isoelectronic with sodium (na+).

Answer 2

$Mg^{+2}$ is isoelectronic with $Na^+, Al^{+3}$ etc ions.

• Isoelectronic species are defined as those species which have the same number of electrons.
• The number of electrons in Mg is 12. In $Mg^{+2}$ two electrons are removed from Mg and the number of electrons on magnesium ion is 10.
• Thus it will be isoelectronic with the species which contain 10 electrons.
• $Na^+, Al^{+3}$ both has 10 electrons so, they are isoelectronic with $Mg^{+2}$.