From the following list, the number of acidic oxides is ‘a’, the number of neutral oxides is ‘b’ and the number of amphoteric oxides is ‘c’.
`CO_2, CO, GeO_2, GeO, SiO_2, SnO,PbO_2,PbO`
Find the value of (a + b + c).

Answer

To solve the problem, we need to classify the given oxides into three categories: acidic oxides, neutral oxides, and amphoteric oxides. Let's analyze each oxide one by one.

### Step 1: Identify Acidic Oxides
1. **CO₂ (Carbon Dioxide)**: This is an acidic oxide.
2. **GeO₂ (Germanium Dioxide)**: This is also an acidic oxide as it is a non-metal oxide.
3. **SiO₂ (Silicon Dioxide)**: This is another acidic oxide.

### Step 2: Identify Neutral Oxides
1. **CO (Carbon Monoxide)**: This is a neutral oxide.

### Step 3: Identify Amphoteric Oxides
1. **GeO (Germanium Monoxide)**: This can act as an amphoteric oxide.
2. **SnO (Tin(II) Oxide)**: This is also amphoteric.
3. **PbO (Lead(II) Oxide)**: This is amphoteric as well.
4. **PbO₂ (Lead(IV) Oxide)**: This is also amphoteric.

### Summary of Classifications
- **Acidic Oxides (a)**: 3 (CO₂, GeO₂, SiO₂)
- **Neutral Oxides (b)**: 1 (CO)
- **Amphoteric Oxides (c)**: 4 (GeO, SnO, PbO, PbO₂)

### Step 4: Calculate (a + b + c)
Now, we can calculate the total:
- a = 3 (acidic oxides)
- b = 1 (neutral oxides)
- c = 4 (amphoteric oxides)

Thus, \( a + b + c = 3 + 1 + 4 = 8 \).

### Final Answer
The value of \( a + b + c \) is **8**.

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