Q.

Which combination will give the strongest ionic bond?

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a

Ca2+,O2−

b

Ca2+,Cl−

c

K+,O2−

d

K+,Cl−

answer is A.

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Detailed Solution

Smaller the size, larger the charge, then greater the force of attraction.Ca2++1⇒−2>−1Thus, strongest ionic bond is between Ca2+ and O2-.
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