Number of oxygen atoms in molybdate ion is

Answer

To determine the number of oxygen atoms in the molybdate ion, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Molybdate Ion**:
The molybdate ion is represented as \( \text{MoO}_4^{2-} \). This indicates that it is an oxoanion of molybdenum.

2. **Examine the Molecular Formula**:
The formula \( \text{MoO}_4^{2-} \) tells us that there are four oxygen atoms bonded to one molybdenum atom.

3. **Count the Oxygen Atoms**:
In the formula \( \text{MoO}_4^{2-} \), the subscript '4' next to the oxygen (O) indicates that there are four oxygen atoms in total.

4. **Conclude the Count**:
Therefore, the total number of oxygen atoms in the molybdate ion is 4.

### Final Answer:
The number of oxygen atoms in the molybdate ion is **4**.

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