Question

Assertion (A): Argon is a diatomic molecule.
Reason (R): No atom can exist independently. Atoms always combine with each other to form molecules.

Answer 1

Atoms of most of the elements do not exist independently. They chemically combine with each other to form molecules. However, atoms of few elements such as argon, neon, helium, etc., exist independently as a single atom. Therefore, they can be considered as monoatomic molecules.

Therefore, both the assertion (A) and reason (R) are false.