Answer:
From the above table, it is clear that \[{{K}^{+}}\] has same number of electrons in its outermost shell and penultimate shell. Species No. of electrons Electronic configuration \[{{O}^{2-}}\] 10 2, 8 \[{{K}^{+}}\] 18 2, 8, 8 \[A{{l}^{+3}}\] 10 2, 8 \[{{F}^{-}}\] 10 2, 8
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