What is the chemical symbol for beryllium?

Hint: Chemical symbols are abbreviations for chemical elements, functional groups, and chemical compounds. Chemical element symbols are usually composed of one or two letters from the Latin alphabet, with the first letter capitalised.

Complete step-by-step answer:
Beryllium is a chemical element with the atomic number $4$ and the symbol $Be$. Beryllium is a white metal with a silvery lustre. It has a low density and is comparatively soft. Due to its properties such as high stiffness, lightweight, high elastic modulus, and high-purity beryllium is expensive.

Beryllium is commonly used in gears and cogs, especially in the aerospace industry. Beryllium alloys of copper or nickel are used to produce gyroscopes, springs, electrical contacts, spot-welding electrodes, and non-sparking materials.

It is a fairly uncommon element of the universe, typically arising as a result of the spallation of larger atomic nuclei colliding with cosmic rays. Beryllium is depleted within the cores of stars when it is incorporated into heavier elements. Beryllium is mostly extracted from bertrandite and beryl ores.

The chemical symbol of beryllium is $Be$ and it has an atomic number of $4$. Beryllium's symbol is due to the fact that commonly, chemical element symbols are made up of one or two letters from the Latin alphabet, with the first letter capitalised.

Thus the chemical symbol of Beryllium is Be.

Note: While beryllium does not usually form simple ions, however it does form ions in a solution as $B{e^{2 + }}$ . When beryllium is added to water, the beryllium ion binds with four water molecules to form a complex ion with the formula \[{\left[ {Be{{({H_2}O)}_4}} \right]^{2 + }}\] .