Which of the following is the correct order o | vedclass

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(A) The given ions $P^{3-}$,$S^{2-}$,and $Cl^{-}$ are isoelectronic species,as they all have $18$ electrons.For isoelectronic species,the ionic radius

Vedclass · Accepted Answer

$Cl^{-} < S^{2-} < P^{3-}$

Vedclass · Answer

(A) The given ions $P^{3-}$,$S^{2-}$,and $Cl^{-}$ are isoelectronic species,as they all have $18$ electrons.For isoelectronic species,the ionic radius increases as the nuclear charge (atomic number) decreases.The atomic numbers are: $P = 15$,$S = 16$,and $Cl = 17$.Since the nuclear charge follows the order $P  S^{2-} > Cl^{-}$.Therefore,the correct increasing order is $Cl^{-} < S^{2-} < P^{3-}$.

Which of the following is the correct order of the ionic radii of the given ions?

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