Are you drawing a "blank"?
Surely you can
figure out how
these rocks are
formed. It's just
a "process" of
elimination.

Well to my expert knowledge and my exquisite calculations i think the the negative ion # 412 is the key to sucess

16- counting by fours

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.