Two models of the same compound are shown. on the left labeled model a 2 large overlapping black spheres with 3 small blue spheres overlapping the rear black sphere and 2 medium red spheres overlapping the front black sphere. one of the red spheres has a small blue sphere overlapping it. on the right labeled model b 2 c's connected by a black line. the c on the left has 3 h's attached by 1 black line each and the c on the right has 2 os attached to it. the top o is attached by 2 black lines and the bottom o by 1 black line. the bottom o also has an h attached to it by 1 black line. in what way is model a better than model b? model a shows the types of elements in the compound, but model b does not. model a shows the total number of atoms in the molecule, but model b does not. model a shows the three-dimensional shape of the molecule, but model b does not. model a shows the number of atoms of each element in the molecule, but model b does not.