Which of the following states an important result of rutherford's gold-foil experiment? a. atoms have mass. b. electrons have a negative charge c. neutrons are uncharged particles d. the atom is mostly empty space

Rutherford's gold-foil experiment showed that D. the atom is mostly empty space.

When he shot α particles at a thin gold foil, most of them went straight through the foil without being deflected.

However, a few of the α particles were deflected by rather large angles. He concluded that the atom is mostly empty space with almost all its mass concentrated in a small central nucleus.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements