Answer:
![\boxed {\boxed {\sf Electrons}}](https://img.qammunity.org/2021/formulas/chemistry/high-school/94phyq1zq90ieh1zfcwvvew84wh6n79f93.png)
Step-by-step explanation:
There are 3 major subatomic particles:
Proton
Neutron
Electron
- Surrounding the nucleus in orbitals
Two (protons and neutrons) of the three particles are found in the nucleus of an atom. Electrons are not, they are surrounding the nucleus.