which of the following pair is not isoelectronic---
A)Na +&Na
,B)Mg2+&Ne
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Answer:
B) Mg2+ & Ne
Explanation:
Isoelectric pairs are the pairs with same elctronic configuration. So they must have same number of electrons. But Na+ has one electron less than Na. Mg has two electrons in its outer shell. When it gives 2 electrons to become Mg2+ it has the same electronic configuration as Ne.
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