Question

what is an atomic * 20 points nucleus? the small dense region consisting of protons and neutrons at the center of an atom a stable subatomic particle with a positive electric charge the total number of protons and neutrons in the nucleus of an atom a subatomic particle that has no electric charge a subatomic particle whose electric charge is negative

Explanation:

An atomic nucleus is the central part of an atom. It is small and dense. Protons (positively - charged) and neutrons (neutral) are located in the nucleus.

• The second option describes a proton (a stable subatomic particle with a positive electric charge).
• The third option describes the mass number (the total number of protons and neutrons in the nucleus of an atom).
• The fourth option describes a neutron (a subatomic particle that has no electric charge).
• The fifth option describes an electron (a subatomic particle whose electric charge is negative).

Answer:

the small dense region consisting of protons and neutrons at the center of an atom