A) Radius of \[C{{a}^{2+}}<C{{l}^{-}}<{{S}^{2-}}\]
B) Radius of \[C{{l}^{-}}<{{S}^{2-}}<C{{a}^{2+}}\]
C) Radius of \[{{S}^{2-}}=C{{l}^{-}}=C{{a}^{2+}}\]
D) Radius of \[{{S}^{2-}}<C{{l}^{-}}<C{{a}^{2+}}\]
Correct Answer: A
Solution :
Species | Atomic Number | Number of electrons |
\[C{{a}^{2+}}\] | 20 | \[20-2=18\] |
\[C{{l}^{-}}\] | 17 | \[17+1=18\] |
\[{{S}^{2-}}\] | 16 | \[16+2=18\] |
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