The eighth group of Mendeleev's periodic table is divided into how many subgroups?

Options

A. 2
B. 0
C. 4
D. 1

Explanation

To solve the question regarding how many subgroups the eighth group of Mendeleev's periodic table is divided into, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Mendeleev's Periodic Table**:
- Mendeleev's periodic table consists of groups (columns) and periods (rows). The groups are numbered from 1 to 8.

2. **Identify the Groups**:
- Groups 1 to 7 contain normal elements and are further divided into two subgroups each (A and B groups).

3. **Focus on Group 8**:
- Group 8 is unique as it is designated for transition elements.

4. **Determine the Subgroup Division**:
- Unlike groups 1 to 7, group 8 does not have subgroups. It is treated as a single group without further division.

5. **Conclusion**:
- Therefore, the eighth group of Mendeleev's periodic table is not divided into any subgroups.

### Final Answer:
The eighth group of Mendeleev's periodic table is divided into **0 subgroups**.

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