Draw the Lewis structures of the following species :
`BCl_3`

Explanation

To draw the Lewis structure of \( BCl_3 \), we will follow these steps:

### Step 1: Determine the total number of valence electrons
- **Boron (B)** has an atomic number of 5, which means it has 3 valence electrons (since it is in group 13).
- **Chlorine (Cl)** has an atomic number of 17, which means it has 7 valence electrons (since it is in group 17).
- Since there are 3 chlorine atoms in \( BCl_3 \), the total number of valence electrons contributed by chlorine is \( 3 \times 7 = 21 \).
- Therefore, the total number of valence electrons in \( BCl_3 \) is:
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