in the modern model of an atom over 99.9% of the atom is made up of
A) Protons
B) Neutrons
C) Electrons
D) Empty space

Respuesta :

D.   It's empty space.

It’s empty space.. also if you want to impress your teacher you can say an atom is actually 99.999999% empty..our teacher told us this.. he said if we are all wannabe geeks that want to impress teachers we should say this..(and you all probably don’t care) ANYWAYS again it’s empty space