Yes, aluminum is more electronegative than sodium.

Here's why:

* Electronegativity is a measure of an atom's ability to attract electrons towards itself in a chemical bond.

* Aluminum has an electronegativity value of 1.61 on the Pauling scale.

* Sodium has an electronegativity value of 0.93 on the Pauling scale.

Since aluminum has a higher electronegativity value than sodium, it is more likely to attract electrons in a bond with sodium.