Three elements P, Q and R crystallise in a cubic solid lattice with P atoms at corners Q atoms at the body centre and R atoms at the centre of edges, then write the formula of the compound.

Explanation

To determine the formula of the compound formed by the elements P, Q, and R in a cubic solid lattice, we need to analyze the contributions of each type of atom based on their positions in the lattice.

### Step-by-Step Solution:

1. **Identify the Positions of Atoms:**
- P atoms are located at the corners of the cube.
- Q atoms are located at the body center of the cube.
- R atoms are located at the edge centers of the cube.
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