A) \[M{{g}^{2+}}\]
B) \[N{{a}^{+}}\]
C) \[A{{l}^{3+}}\]
D) \[S{{i}^{4+}}\]
Correct Answer: D
Solution :
Atomic size decreases in a period from left to right. Also size decreases with increase in positive charge. Hence, among given species, \[S{{i}^{4+}}\] will be the smallest.
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