Which of the following is not an example of 13-15 commpound ?

Options

A. InSb
B. GaAs
C. CdSe
D. AIP

Answer

To solve the question "Which of the following is not an example of 13-15 compound?", we need to identify the elements from groups 13 and 15 of the periodic table and analyze the given options.

### Step-by-Step Solution:

1. **Identify Group 13 Elements**:
- The elements in group 13 (also known as the boron group) are:
- Boron (B)
- Aluminum (Al)
- Gallium (Ga)
- Indium (In)
- Thallium (Tl)

2. **Identify Group 15 Elements**:
- The elements in group 15 (also known as the nitrogen group) are:
- Nitrogen (N)
- Phosphorus (P)
- Arsenic (As)
- Antimony (Sb)
- Bismuth (Bi)

3. **Analyze the Options**:
- We need to check each option to see if it contains elements from group 13 or group 15.
- Let's denote the options as follows:
- Option 1: Indium (In), Gallium (Ga)
- Option 2: Aluminum (Al), Cadmium (Cd)
- Option 3: Antimony (Sb), Arsenic (As)
- Option 4: Selenium (Se), Phosphorus (P)

4. **Check Each Option**:
- **Option 1**: Both Indium and Gallium are from group 13. (Valid)
- **Option 2**: Aluminum is from group 13, but Cadmium (Cd) is from group 12, not group 13 or 15. (Not valid)
- **Option 3**: Antimony and Arsenic are both from group 15. (Valid)
- **Option 4**: Selenium is from group 16, and Phosphorus is from group 15. (Not valid)

5. **Conclusion**:
- The option that contains an element not from groups 13 or 15 is **Option 2** (Cadmium).

### Final Answer:
**Option 2: Cadmium (Cd) is not an example of a 13-15 compound.**