Atomic Number (Z)

Definition

The atomic number (Z) of an element refers to the number of protons in the nucleus of an atom. It determines the identity of the element.

Related terms

Isotope: Isotopes are atoms of the same element that have different numbers of neutrons in their nuclei.

Periodic Table: The periodic table is a tabular arrangement of elements based on their atomic numbers and chemical properties.

Electron Configuration: Electron configuration refers to how electrons are arranged in energy levels around an atom's nucleus.