There are many different types of atoms, each with its own name, mass and size. These different types of atoms are called chemical elements. The chemical elements are organized on the periodic table. Examples of elements are hydrogen and gold. Atoms are very small, but their exact size depends on the element.

Many atoms consist of a positively charged nucleus consisting of protons and neutrons surrounded by a cloud of electrons charged negatively. An atom is any particle of matter at its most basic level which contains at least one proton. Here are some examples of the atoms: hydrogen (H) neon (Ne).

Atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of chemistry.

Answer. Answer: Put briefly and simply, the atomic structure of a compound is a key component to understanding the reactivity and behavior of chemicals. Just by looking at the structure of a molecule, a chemist can predict many things about a chemical such as : Boiling and melting points.

The first 30 elements of the periodic table and their symbols

The Elements, sorted by Atomic Number

Beryllium is a chemical element with the symbol Be and atomic number 4.

Oxygen