• # question_answer Which of the following has smallest size  [JIPMER (Med.) 2002] A) $M{{g}^{2+}}$ B) $N{{a}^{+}}$ C) $A{{l}^{3+}}$ D) $S{{i}^{4+}}$

$S{{i}^{4+}}$is smallest in size due to their greater +ve charge.