Write Lewis symbols for the following atoms and ions :
`S` and ` S^(2 - )` , `Al` and `Al^(3+)` , `H` and `H^(-)`

Explanation

To write the Lewis symbols for the given atoms and ions, we will follow these steps:

### Step 1: Determine the Valence Electrons
- **Sulfur (S)**: The atomic number is 16, and its electronic configuration is 2, 8, 6. This means sulfur has 6 valence electrons.
- **Sulfide Ion (S²⁻)**: When sulfur gains 2 electrons, it becomes S²⁻, resulting in 8 valence electrons.

### Step 2: Write the Lewis Symbol for Sulfur
- For sulfur (S), we represent the 6 valence electrons as dots around the symbol:
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