How many electrons are unpaired in
He

Explanation

To determine how many electrons are unpaired in a helium atom, we can follow these steps:

### Step 1: Identify the Atomic Number of Helium
Helium (He) has an atomic number of 2, which means it has 2 electrons.

### Step 2: Write the Electronic Configuration
The electronic configuration of helium is 1s². This means that both of its electrons are in the 1s orbital.

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