Question

identifying parts of an atom
identify the parts of the atom that are labeled in the diagram.
label a:
label b:

Explanation:

In an atom, the central part made of protons and neutrons is the nucleus. Electrons are found in the electron - cloud outside the nucleus. Label A points to the central mass which is the nucleus. Label B points to a particle in the outer region which is an electron.

Answer:

Label A: Nucleus
Label B: Electron