Identify the atoms in each of the following compounds which do not obey the octet rule:
`BCl_3`

Explanation

To identify the atoms in the compound \( BCl_3 \) that do not obey the octet rule, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Octet Rule**: The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons, achieving a noble gas electron configuration.

2. **Determine the Valence Electrons**:
- **Boron (B)**: Boron has an atomic number of 5, which means its electronic configuration is \( 1s^2 2s^2 2p^1 \). Therefore, boron has 3 valence electrons.
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