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Among the following, the number of halide(s) which is/are inert to hydrolysis is ________. (A) BF3 (B) SiCl4 (C) PCl5 (D) SF6

1. (A) BF3
2. (B) SiCl4
3. (C) PCl5
4. (D) SF6

Correct answer: (A) BF3

Solution

BF3 is a covalent compound that does not undergo hydrolysis due to its stable electron-deficient boron atom, which does not readily react with water. In contrast, the other options can hydrolyze due to their ability to form stable products with water.

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