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Question

What is the atomicity of phosphorus?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
Tetra-atomic

Phosphorus Atomicity Explained

Atomicity is defined as the number of atoms that constitute one molecule of an element.

Understanding Phosphorus's Common Form

Phosphorus exhibits different allotropes. The most commonly encountered and stable allotrope is white phosphorus.

White phosphorus exists as molecules with the empirical formula $P_4$.

Determining the Atomicity

The molecular formula $P_4$ clearly shows that each molecule contains four atoms of phosphorus.

Consequently, the atomicity of phosphorus in its common allotropic form is tetra-atomic.

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