Answer:
a. Any one way then I can say that Aluminum sulfide has mass per mole of ≈150.2g while aluminum has mass per mole of 26.9g
b. Sulfur is an element but aluminum sulfide is a compound
c.Beryllium and chlorine
d. BeCl2
e.i. Metals form ions by losing electrons but nonmetals form ions by gaining electrons
ii.A metal can react with an acid to produce a salt a nonmetal doesnt
iii. A metal forms ionic compounds whilst nonmetals form covalent compounds
