Match (A) mole, (B) Avogadro's number, (C) 22.4 L, (D) vapour density, (E) empirical formula with its description in (1)-(v) given below.
I represents the simple ratio of atoms in a molecule.

Answer

To solve the question, we need to match the given terms with their correct descriptions. The terms we have are:

- (A) mole
- (B) Avogadro's number
- (C) 22.4 L
- (D) vapor density
- (E) empirical formula

And the description we need to match is:

(1) It represents the simple ratio of atoms in a molecule.

### Step-by-Step Solution:

1. **Understanding the Terms**:
- **Mole**: A unit in chemistry that represents a specific number of particles, typically \(6.022 \times 10^{23}\) particles.
- **Avogadro's Number**: The number of particles in one mole, which is \(6.022 \times 10^{23}\).
- **22.4 L**: The volume occupied by one mole of an ideal gas at standard temperature and pressure (STP).
- **Vapor Density**: A measure of the density of a vapor compared to the density of hydrogen.
- **Empirical Formula**: The simplest whole-number ratio of atoms in a compound.

2. **Analyzing the Description**:
- The description states that it represents the simple ratio of atoms in a molecule. This is specifically referring to the empirical formula, which gives the simplest ratio of the elements in a compound.

3. **Matching**:
- Based on our analysis, we can match:
- (E) empirical formula with (1) It represents the simple ratio of atoms in a molecule.

### Final Answer:
- (E) empirical formula matches with (1) It represents the simple ratio of atoms in a molecule.