Question

1. which element does not form a diatomic molecule in its elemental form?

options: bromine, boron, fluorine, nitrogen

Explanation:

Diatomic molecules in elemental form are made of two atoms of the same element. The diatomic elements are typically remembered by the mnemonic "HONClBrIF" (Hydrogen, Oxygen, Nitrogen, Chlorine, Bromine, Iodine, Fluorine). Bromine (Br₂), Fluorine (F₂), and Nitrogen (N₂) are diatomic. Boron (B) is a metalloid that does not form a diatomic molecule in its elemental form; it has a more complex atomic arrangement (like a network or cluster) rather than being diatomic.

Answer:

B. boron