An element M reacts with chlorine to from a compound X. The bond angle in X is 120^o. What is M ?

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answer is B.

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Detailed Solution

It is given that an element M reacts with chlorine to form a compound X. The bond angle in X is found to be 120^o. This implies the compound is trigonal planar molecule of the type MCl₃. B is the only element among the given elements which has valency 3 and forms trigonal planar halide with chlorine.

Hence, option B is the correct answer.

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