Write the name of two elements in group I.

Explanation

To answer the question, "Write the name of two elements in group I," we can follow these steps:

### Step-by-Step Solution:

1. **Identify Group I Elements**: Group I of the periodic table is known as the alkali metals. These elements have one valence electron in their outermost shell.

2. **List Elements in Group I**: The elements in Group I include:
- Lithium (Li)
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