Language of Chemistry - Symbols of Elements

A symbol is the short-hand representation of an atom of a specific element. For example, the symbol for Hydrogen is $H$.

Modern symbols are based on the system proposed by J.J. Berzelius, using the first letter or the first and another letter of the element's name.

The first letter of a symbol is always written in Uppercase (Capital), and the second letter is always written in Lowercase. Example: $Co$ for Cobalt and $Mg$ for Magnesium.

Some elements derive their symbols from Latin names: Sodium is $Na$ ($Natrium$), Potassium is $K$ ($Kalium$), Iron is $Fe$ ($Ferrum$), Copper is $Cu$ ($Cuprum$), and Gold is $Au$ ($Aurum$).

Atomicity is defined as the number of atoms present in one molecule of an element.

Monoatomic elements exist as single atoms, such as Noble gases like Helium ($He$) and Neon ($Ne$).

Diatomic elements consist of two atoms per molecule, such as Hydrogen ($H_2$), Oxygen ($O_2$), and Nitrogen ($N_2$).

Polyatomic elements consist of more than two atoms, such as Phosphorus ($P_4$) and Sulphur ($S_8$).