the Atom

Atom

smallest particle of an element

Nucleons

• Nucleons are particles found in an atomic nucleus

• Protons and neutrons are examples of nucleons

energy shells

Energy shells are regions around the nucleus where electrons are found in an atom. They are organized into different levels based on their energy.

Isotopes

Atoms of the same element with the same atomic number but different mass number.

Relative atomic mass

It is a way of comparing the weight of different atoms , it tells you the weight of an atom compared to a standard atom.

electronic configuration

The way in which electrons are arranged around the nucleas

orbitals

Orbitals are regions around the nucleus where electrons are likely to be found. They come in different shapes (s, p, d, f) and can hold a maximum of 2 electrons with opposite spins. / An orbital is regions around the nucleas where a pair of electrons spin opposite each other.