Question

the nucleus has ______ and _______​

Answer 1

Explanation:

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged). Atoms have different properties based on the arrangement and number of their basic particles.

Answer 2

Explanation:

The nucleus is a collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral. Protons and neutrons are in turn made up of particles called quarks. ... The atomic mass of the nucleus is given by, A=Z+N, where, N, is the number of neutrons in the nucleus.