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In which of the following molecules all the bonds are not equal?

1. BF3
2. AlF3
3. NF3
4. ClF3

Correct answer: ClF3

Solution

In ClF3, the molecule has a T-shaped geometry due to lone pairs on the central chlorine atom, leading to unequal bond angles and bond lengths. Other molecules like BF3 and NF3 have symmetrical or predictable geometries with equal bonds.

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