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The relaese of lattice energy why are compounds like Mg2O3(s) containing Mg3+ or NaO containing Na2+...

The relaese of lattice energy

why are compounds like Mg2O3(s) containing Mg3+ or NaO containing Na2+ never observed to form in reactions of the elements?

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Answer #1

formation of Mg3+ needs very high amount of ionisation eenrgy.which is not possible in normal conditions.

Mg =12 = 1s2 2s2 2p6 3s2

Mg^3+ = 9 = 1s2 2s2 2p5 3s0   (removal of 3rd eelctron is very difficult from 2p6.)

similarly, in case of Na2+.

formation of Na2+. needs very high amount of ionisation energy.which is not possible in normal conditions.

Na =11 = 1s2 2s2 2p6 3s1

Na2+. = 9 = 1s2 2s2 2p5 3s0   (removal of 2nd eelctron is very difficult from 2p6.)

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