The sum of lone pairs present on the central atom of the interhalogen IF 5 and IF 7 is______
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(1) In IFs, the central atom is iodine, which has 7 valence electrons. Iodine in this molecule has 5 bonding pairs and 1 lone pair. Therefore, the number of lone pairs on the central atom of IFs is 1.
In IF 7 , the central atom is also iodine, which has 7 valence electrons. Iodine in this molecule has 7 bond pairs and 0 lone pairs. Therefore, the number of lone pairs on the central atom of IF 7 is 0.
Therefore, the sum of the number of lone pairs in the central atom of IF 5 and IF 7 is 1 + 0 = 1.
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