Molecular mass of nitrogen is 28. Its atomic mass is 14. Find the atomicity of nitrogen.

To determine the atomicity of nitrogen, we first need to understand what atomicity means. Atomicity refers to the number of atoms in a molecule of a substance. In the case of nitrogen, we are specifically looking at its molecular form, which is diatomic, meaning it consists of two nitrogen atoms bonded together.

Understanding Molecular Mass and Atomic Mass

The molecular mass of nitrogen is given as 28, while the atomic mass of a single nitrogen atom is 14. This information is crucial for calculating atomicity. The molecular mass is essentially the sum of the atomic masses of the atoms that make up the molecule.

Calculating Atomicity

Since nitrogen exists as a diatomic molecule (N₂), we can express the molecular mass as follows:

• Molecular mass of nitrogen (N₂) = Atomic mass of nitrogen (N) × Number of nitrogen atoms in the molecule
• 28 = 14 × Atomicity

To find the atomicity, we can rearrange the equation:

• Atomicity = Molecular mass / Atomic mass
• Atomicity = 28 / 14
• Atomicity = 2

Conclusion on Atomicity

Thus, the atomicity of nitrogen is 2, indicating that each molecule of nitrogen gas is composed of two nitrogen atoms. This diatomic nature is a fundamental characteristic of nitrogen in its gaseous form, which is essential for various chemical reactions and biological processes, including the nitrogen cycle in ecosystems.