Arrange the following in increasing order of the property indicated.
(i) Mg, Al, Si and Na (ionization enthalpy)

Explanation

To arrange the elements Mg, Al, Si, and Na in increasing order of ionization enthalpy, we can follow these steps:

### Step 1: Understand Ionization Enthalpy
Ionization enthalpy (or ionization energy) is the energy required to remove the most loosely bound electron from a neutral gaseous atom. Generally, ionization enthalpy increases across a period in the periodic table due to the increase in nuclear charge and decrease in atomic size.

### Step 2: Identify the Position of Elements
The given elements are:
- Sodium (Na) - Group 1, Period 3
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