Which element has a lower first ionization energy than aluminum (Al)?The Periodic TableA.Boron (B)B.Neon (Ne)C.Sulfur (S)D.Sodium (Na)

The element that has a lower first ionization energy than aluminum (Al) is Sodium (Na).

Here's the step by step explanation:

1. Ionization energy is the energy required to remove an electron from an atom or ion.

2. In general, ionization energy increases from left to right across a period (row) and decreases from top to bottom down a group (column) on the periodic table.

3. Aluminum (Al) is in the third period and the 13th group of the periodic table.

4. Sodium (Na) is in the third period and the 1st group of the periodic table.

5. Since Sodium (Na) is to the left of Aluminum (Al) in the same period, it has a lower first ionization energy.

So, the answer is D. Sodium (Na).