Subatomic particles:

* Protons: 3 protons in the nucleus, giving it an atomic number of 3.

* Neutrons: Usually 4 neutrons in the nucleus, but isotopes can have different numbers of neutrons.

* Electrons: 3 electrons orbiting the nucleus, arranged in two electron shells:

* First shell (n=1): 2 electrons

* Second shell (n=2): 1 electron

Other components:

* Nucleus: The central part of the atom, containing the protons and neutrons.

* Electron cloud: The region surrounding the nucleus where the electrons are found.

Note: The number of neutrons in an atom can vary, creating different isotopes of lithium. The most common isotope is lithium-7, which has 3 protons and 4 neutrons.