Arrange the following ions in order of their increasing size: `Li^(+), Mg^(2+), K^(+), AI^(3+)`.

Explanation

To arrange the ions `Li^(+), Mg^(2+), K^(+), Al^(3+)` in order of their increasing size, we will follow these steps:

### Step 1: Identify the number of electrons in each ion
- **Li^(+)**: Lithium has 3 electrons, and losing 1 electron gives it 2 electrons.
- **Mg^(2+)**: Magnesium has 12 electrons, and losing 2 electrons gives it 10 electrons.
- **K^(+)**: Potassium has 19 electrons, and losing 1 electron gives it 18 electrons.
- **Al^(3+)**: Aluminum has 13 electrons, and losing 3 electrons gives it 10 electrons.

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