Chemical Bonds

The PERIOD indicates the energy levels in the electron cloud.

The chemical reactivity is determined by the valence electrons.

Ionic bonds are formed between metals and nonmetals.

Potassium (K) has 19 electrons.

Beryllium has an atomic number of 4.

An ionic bond is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions.

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds.

The atomic number indicates the number of protons in an atom and determines the element's identity.

A covalent bond is a chemical bond formed when two atoms share one or more pairs of electrons.

Metals tend to lose electrons and form positive ions, while nonmetals tend to gain electrons and form negative ions.