An element Z forms a molecular compound ZBr₃ that is found to have trigonal pyramidal molecular geometry. The element Z must be in which group in the periodic table?

Question

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The trigonal pyramidal molecular geometry suggests that the central atom (Z) has one lone pair and forms three bonds. This is characteristic of elements in group VA (15) of the periodic table, which includes nitrogen, phosphorus, arsenic, antimony, and bismuth. These elements typically have five valence electrons, allowing them to form three bonds and have one lone pair in such a molecular geometry.

An Element Z Forms a Molecular Compound ZBr3 That Is

An Element Z Forms a Molecular Compound ZBr₃ That Is