Question

two models of the same compound are shown. 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.

Explanation:

Model A is a 3 - D space - filling model which can show the three - dimensional shape of the molecule. Model B is a structural formula which only shows the bonding arrangement in two - dimensions.

Answer:

Model A shows the three - dimensional shape of the molecule, but Model B does not.