Identify the common name of group of elements based on following facts: Elements with one electron less in their valence shell to complete their octet.

Explanation

To identify the common name of the group of elements based on the provided facts, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Valence Electrons**:
- Elements have a certain number of electrons in their outermost shell, known as valence electrons. The goal for many elements is to achieve a stable electron configuration, often referred to as an octet, which means having 8 electrons in the valence shell.

**Hint**: Remember that elements strive for stability, often by achieving a full outer shell.
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