A) \[Na,Mg\]
B) \[{{O}^{2-}},{{N}^{3-}}\]
C) \[L{{i}^{+}},B{{e}^{2+}}\]
D) \[B{{a}^{2+}},S{{r}^{2+}}\]
E) \[Al,Be\]
Correct Answer: B
Solution :
\[{{O}^{2-}}\]and\[{{N}^{3-}}\]both are isoelectronic but differ in the charge possessed by them. As the negative charge increase, the electrons are held less and less tightly by the nucleus, therefore, increase radius from\[{{O}^{2-}}\]to\[{{N}^{3-}}\].You need to login to perform this action.
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