From the electronic configurations Li (2, 1), Na (2, 8, 1) and K (2, 8, 8, 1), answer the following questions:
What is the period of Na in the periodic table?

Explanation

To determine the period of sodium (Na) in the periodic table from its electronic configuration, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Electronic Configuration**:
The electronic configuration of sodium is given as 2, 8, 1. This means that sodium has:
- 2 electrons in the first shell
- 8 electrons in the second shell
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