Which combination will give the strongest ionic bond?

K^{+}

and

C l^{-}

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K^{+}

and

O^{2 -}

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C a^{2 +}

and

C l^{-}

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C a^{2 +}

and

O^{2 -}

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Solution

The correct option is D $C a^{2 +}$ and $O^{2 -}$
Ionic bond strength depends on two things :

a) Ionic charge - the greater the product of the ionic charges. the stronger the bond.

b) Ionic size - the lower the sum of the anion and cation radii, the stronger the bond.

$C a^{+ 2}$ and $O^{- 2}$ ions have smaller sizes and more charges compared to the rest. They will form a stronger ionic bond.

Therefore, the correct option is D.

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Similar questions

The correct order of ionic size of the species $K^{+}, C l^{-}, C a^{2 +}$ and $S^{2 -}$ is:

S^{2 -}, K^{+}, C a^{2 +}, C l^{-}

K^{+}, C l^{-}, S^{2 -}, C a^{2 +}

F, L i, M g, K

{C a}^{2 +}, K^{+}, {C l}^{-}, S^{2 -}

F < L i < M g < K

{C a}^{2 +} < K^{+} < {C l}^{-} < S^{2 -}

K^{+}, S^{2 -}, C l^{-}

C a^{2 +}

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