Question

Which symbolizes a molecule of a compound?

Answer 1

The answer is A.H202

R u sure

Yerp

Positive?

"          ??     Yerp!

_    

Answer 2

$H_{2} O_{2}$ symbolizes a molecule of a compound

Answer: Option A

Explanation:

A molecule contains one or more atoms which exists free in nature. It can be monoatomic (single atom), Na, Cu, C, N, H, O, etc. and diatomic (containing 2 atoms), are of two types

• Homo-diatomic- same atoms ($H_{2}, O_{2}, F_{2}, B r_{2}, C l_{2}$, etc.)
• Hetero-diatomic- different atoms (HCl, HF, NO, NaCl, etc.)
• Tri-atomic (containing 3 atoms) $\mathrm{H}_{2} \mathrm{O}, \mathrm{N}_{2} \mathrm{O}, \mathrm{Na}_{2} \mathrm{O}$, etc.
• Polyatomic (containing many atoms) $H_{2} S O_{4}, P_{2} O_{5}, H N O_{3}$, etc.

A compound consists of more one atom which are chemically combined in a fixed composition. So, here we see $H_{2} O_{2}$ is the molecule which symbolizes a compound since it contains more than one element, H and O present in it.