Which statement is correct for any neutral atom?
The number of protons in its nucleus is always equal to the number of neutrons.
The total positive charge of its nucleus is equal in magnitude to the total negative charge of its electrons.
All of its electrons are concentrated inside the nucleus.
Most of the mass of the atom is distributed in the region outside the nucleus.
114 exam-style questions on CIE IGCSE Physics 5.1.1a Structure of the atom and ions. Each one has a worked solution and a mark scheme showing where the marks go.