Among the metals , , and , what is the number of valence electrons contributed by the metal with the — Solid State Chemistry Question

💡 Solution & Explanation

Metallic bond strength is directly proportional to the number of valence electrons contributed to the 'sea of electrons' and inversely proportional to atomic size. Aluminium ($Al$) has 3 valence electrons, making its metallic bond the strongest among $Mg$ (2), $Ca$ (2), and $Al$.