Which element of group 2 is not considered as alkaline earth metal?

Explanation

To answer the question "Which element of group 2 is not considered as an alkaline earth metal?", we can follow these steps:

### Step-by-Step Solution:

1. **Identify Group 2 Elements**:
The elements in Group 2 of the periodic table are known as alkaline earth metals. These include:
- Beryllium (Be)
- Magnesium (Mg)
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