Matter has different characteristics referred to as A. Atoms
B. Colors
C. Traits
D. Properties

Ok so co(g) is not pronoused that. the only clue is that youpronouse it the oppisote way. 

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic

Answer; carbon monoxide (co);

Answer(28.02g/mol);