Respuesta :
Aluminium has the fewest valence electrons available for bonding.
As we go across the groups from left to right, we have the following numbers of valence electron.
• Group 13: Al = 3
• Group 14: C = 4
• Group 15: N = 5
• Group 17: Cl = 7
Thus, Al has the fewest valence electrons available for bonding.