Question

Which of the following statements does not describe the structure of an atom? Inside the nucleus of an atom are protons and neutrons. Protons are positively charged sub-atomic particles. Electrons are negatively charged sub-atomic particles. Most of the mass of an atom comes from the electron cloud.

Answer 1

The last statement - most of the mass of an atom comes from the elactron cloud
Does not describe the structure of atom

Answer 2

I think 4 statement