Number of acidic oxides among the following is:
(a) `N_(2)O` (b) `NO` (c) `N_(2)O_(3)` (d) `N_(2)O_(4)` (e) `N_(2)O_(5)` (f) `P_(4)O_(6)`
(g) `P_(4)O_(10)` (h) `SO_(3)` (i) `B_(2)O_(3)` (j) `CO`

Answer

To determine the number of acidic oxides among the given compounds, we will analyze each oxide based on its acidic or basic nature.

### Step-by-Step Solution:

1. **Identify each oxide and its nature**:
- **(a) N₂O**: This is a neutral oxide.
- **(b) NO**: This is also a neutral oxide.
- **(c) N₂O₃**: This oxide is acidic. It can react with water to form nitric acid (HNO₃).
- **(d) N₂O₄**: This oxide is also acidic. It can react with water to form nitric acid (HNO₃).
- **(e) N₂O₅**: This oxide is acidic. It reacts with water to form nitric acid (HNO₃).
- **(f) P₄O₆**: This oxide is basic. It does not form an acid when reacted with water.
- **(g) P₄O₁₀**: This oxide is acidic. It reacts with water to form phosphoric acid (H₃PO₄).
- **(h) SO₃**: This oxide is acidic. It reacts with water to form sulfuric acid (H₂SO₄).
- **(i) B₂O₃**: This oxide is acidic. It can react with water to form boric acid (H₃BO₃).
- **(j) CO**: This is a neutral oxide.

2. **Count the number of acidic oxides**:
- From the analysis, the acidic oxides are:
- N₂O₃
- N₂O₄
- N₂O₅
- P₄O₁₀
- SO₃
- B₂O₃
- Total acidic oxides = 6.

### Final Answer:
The number of acidic oxides among the given compounds is **6**.

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