................is obtained when yellow phosphorus is heated with an aqueous solution of NaOH in an inert atmosphere.

Explanation

To solve the question regarding the product obtained when yellow phosphorus is heated with an aqueous solution of NaOH in an inert atmosphere, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
The reactants in this reaction are yellow phosphorus (P4) and an aqueous solution of sodium hydroxide (NaOH).

2. **Understand the Reaction Conditions**:
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