​Which of the following element's atomicity is Diatomic ?

Correct option is D

Correct Answer: (d) Nitrogen

Explanation:
• Nitrogen (N₂) is a diatomic molecule, meaning it consists of two atoms of the same element chemically bonded together.
• IIn nature, nitrogen exists as N₂, which has a strong triple bond between its two nitrogen atoms.

Information Booster:
• Diatomic molecules: H₂, N₂, O₂, F₂, Cl₂, Br₂, I₂.
• The term atomicity refers to the number of atoms in a molecule.
• N₂ is highly stable due to its triple covalent bond.
• Atomicity of N₂ = 2; of O₃ (ozone) = 3; of P₄ (phosphorus) = 4.
• Diatomic gases are common in the atmosphere (e.g., N₂ and O₂).

Additional Knowledge:
• Argon – Monoatomic noble gas (atomicity = 1).
• Helium – Monoatomic inert gas (atomicity = 1).
• Phosphorus – Exists as P₄, hence tetratomic.