A) \[{{F}^{-}},{{O}^{-2}}\]
B) \[{{F}^{-}},O\]
C) \[{{F}^{-}},{{O}^{+}}\]
D) \[{{F}^{-}},{{O}^{+2}}\]
Correct Answer: A
Solution :
Isoelectronic species are those which contains same number of electrons. Number of electrons in \[{{F}^{-}}\] and \[{{O}^{-2}}\] are 10, i.e., they are isoelectronic.
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