How many atoms are present in a
(i) `H_(2)S` molecule and
(ii) `PO_(4)^(3-)` ion?

Explanation

To find the number of atoms present in the given chemical species, we will analyze each one separately.

### (i) For the `H₂S` molecule:

1. **Identify the elements present**: The molecule `H₂S` consists of Hydrogen (H) and Sulfur (S).
2. **Count the atoms of each element**:
- The subscript '2' next to H indicates there are 2 Hydrogen atoms.
- There is no subscript next to S, which means there is 1 Sulfur atom.
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