Mg 2 + is isoelectronic with, Cu 2 +, Zn 2 +, Na +, Ca 2 +

Isoelectronic species have same number of electron. Mg 2 + and Na + both have 10 electrons hence, they are isoelectronic species.

Mg 2 + is isoelectronic with

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$\mathrm{Mg}^{2+}$ is isoelectronic with

ChemistryStructure of AtomKCETKCET 2007

Options:

A $\mathrm{Cu}^{2+}$
B $\mathrm{Zn}^{2+}$
C $\mathrm{Na}^{+}$
D $\mathrm{Ca}^{2+}$

Solution:

2554 Upvotes Verified Answer

The correct answer is: $\mathrm{Na}^{+}$

Isoelectronic species have same number of electron. $\mathrm{Mg}^{2+}$ and $\mathrm{Na}^{+}$both have 10 electrons hence, they are isoelectronic species.

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