Answer:
[tex]\boxed {\boxed {\sf Protons \ and \ neutrons }}[/tex]
Explanation:
In an atom, there is a dense center known as the nucleus. It is made up of two subatomic particles: protons and neutrons. The protons have a positive charge and the neutrons have no charge, so overall the nucleus is positively charged.
The third subatomic particles, negatively charged electrons, are located around the nucleus in a cloud.
The particles in the nucleus are [tex]\tt protons \ and \ neutrons[/tex].