Four elements A, B, C and D along with their configurations are given below: Element A-2,1: Element B-2, 8, Element C-2, 8, 1, Element D-2, 8, 8
Which element out of A and B forms more number of compounds?

Explanation

To determine which element between A and B forms more compounds, we need to analyze their electronic configurations and how that affects their reactivity.

### Step-by-Step Solution:

1. **Identify the Electronic Configurations**:
- Element A: 2, 1
- Element B: 2, 8

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