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  4. IF7 is an interhalogen compound. The total count of lone pairs in one molecule is/are

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Q. $IF_{7}$ is an interhalogen compound. The total count of lone pairs in one molecule is/are

NTA AbhyasNTA Abhyas 2022

Solution:

The structure of $IF_{7}$ is as follows:
Solution There is no lone pair of electrons on central $I$ atom. However, each of seven $F$ atoms contains $3$ lone pairs of electrons. Hence, total number of lone pairs of electrons in an $IF_{7}$ molecule is $21$.