Question

na melts at a lower temperature than mg because the melting point depends on the strength of the electrostatic attraction between the cations and the sea of electrons.

false

true

Explanation:

Sodium (Na) has a +1 charge and 1 valence electron per atom, while magnesium (Mg) has a +2 charge and 2 valence electrons per atom. In metallic bonding, the electrostatic attraction between cations and the electron sea is stronger for Mg due to its higher cation charge and more valence electrons. This stronger attraction means Mg requires more energy to melt, so Na melts at a lower temperature, matching the given reasoning.

Answer:

True