A) \[{{K}^{+}},C{{a}^{2+}},S{{c}^{3+}},C{{l}^{-}}\]
B) \[N{{a}^{+}},C{{a}^{2+}},S{{c}^{3+}},{{F}^{-}}\]
C) \[{{K}^{+}},C{{l}^{-}},M{{g}^{2+}},S{{c}^{3+}}\]
D) \[N{{a}^{+}},M{{g}^{2+}},A{{l}^{3+}},C{{l}^{-}}\]
Correct Answer: A
Solution :
| Species | Z | Electron gained or lost in the formation | Electrons |
| \[{{K}^{+}}\] | 19 | \[-1\] | 18 |
| \[C{{a}^{2+}}\] | 20 | \[-2\] | 18 |
| \[S{{c}^{3+}}\] | 21 | \[-3\] | 18 |
| \[C{{l}^{-}}\] | 17 | \[+1\] | 18 |
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