All atoms of the same element have the same number of _____ in their nucleus.
(d) neutrons and protons
(e) protons, neutrons, and electrons.
All atoms of the same element have the same number of protons in their nucleus.
An atom is composed up of three types of particles, collectively called subatomic particles. The three subatomic particles are electrons, protons, and neutrons. Atoms are classified into different elements on the basis of their composition in terms of these subatomic particles.