Valence electron

In stable it becomes and the more likely it is to react.

The number of valence electrons

The number of valence electrons of an element is determined by its transition metals), the number within the unit's place identifies how many valence electrons are contained within the elements listed under that particular column..

* Valence electrons are not generally useful for transition metals.

** Except for helium, which has only two electrons.

Valence electrons in chemical reactions

Main article: Valence (chemistry)

The number of electrons in an atom's outermost valence shell governs its potassium being the most reactive of all metals.

Every atom is much more stable, or less reactive, with a full valence shell. This can be achieved one of two ways: an atom can either share electrons with neighboring atoms, a molecules or ionic compounds. Five major types of bonds exist:

• ionic bonds
• covalent bonds
• coordinate covalent bonds (also called dative covalent bonds)
• hydrogen bonds
• metallic bonds

The valence electrons are also responsible for determining the electrical conductivity nature of an element.