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Ionic bonds are usually formed by combination of elements with:
(1) High ionisation potential and low electron affinity
(2) Low ionisation potential and high electron affinity
(3) High ionisation potential and high electron affinity
(4) Low ionisation potential and low electron affinity
Ans: Low ionisation potential and high electron affinity
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A substance that has a molecular structure built up chiefly or completely from a large number of similar units bonded together.
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