Which combination forms the strongest ionic b | vedclass

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(D) The strength of an ionic bond is determined by lattice energy,which depends on two main factors:$a)$ Ionic charge: The greater the product of the

Vedclass · Accepted Answer

$Ca^{2+}, O^{2-}$

Vedclass · Answer

(D) The strength of an ionic bond is determined by lattice energy,which depends on two main factors:$a)$ Ionic charge: The greater the product of the charges of the ions,the stronger the electrostatic attraction and the stronger the ionic bond.$b)$ Ionic size: The smaller the sum of the ionic radii (inter-ionic distance),the stronger the ionic bond.Comparing the given pairs:$1)$ For $Ca^{2+}$ and $O^{2-}$,the product of charges is $|(+2) 	imes (-2)| = 4$.$2)$ For $K^{+}$ and $O^{2-}$,the product of charges is $|(+1) 	imes (-2)| = 2$.$3)$ For $Ca^{2+}$ and $Cl^{-}$,the product of charges is $|(+2) 	imes (-1)| = 2$.$4)$ For $K^{+}$ and $Cl^{-}$,the product of charges is $|(+1) 	imes (-1)| = 1$.Since $Ca^{2+}$ and $O^{2-}$ have the highest product of charges and relatively small ionic radii,they form the strongest ionic bond.Therefore,the correct option is $D$.

Which combination forms the strongest ionic bond?

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