s-block is comprised of how many groups?

Explanation

To determine how many groups are comprised in the s-block of the periodic table, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the s-block**: The s-block of the periodic table consists of elements whose outermost electrons are in the s orbital. The s orbital can hold a maximum of two electrons.

2. **Identifying the Groups**: The s-block includes two groups in the periodic table:
- **Group 1**: This is known as the Alkali Metals (Li, Na, K, Rb, Cs, Fr).
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