If an equation is balanced properly, both sides of
the equation must have the same number of
(1) atoms
(2) coefficients
(3) molecules
(4) moles of molecules

In chemistry, to determine whether a equation is balanced or not, it needs to have the same number of atoms. Because sometimes, you can include subscripts and no coefficients. Also, in the law of conversation of mass, no matter can be created nor destroyed in a reaction, so all equations must be balanced. 

Final - (1) atoms

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.

No because it not possibly