== ==
When metals react with other elements, the atoms of the metals give up their valence electrons.
== == When metals react with other elements, the atoms of the metals give up their valence electrons.
== == When metals react with other elements, the atoms of the metals give up their valence electrons.
== == When metals react with other elements, the atoms of the metals give up their valence electrons.
== == When metals react with other elements, the atoms of the metals give up their valence electrons.
== == When metals react with other elements, the atoms of the metals give up their valence electrons.
== == When metals react with other elements, the atoms of the metals give up their valence electrons.
Helium has 2 valence electrons. Group 2 elements (alkaline earth metals) also have 2 valence electrons.
Atoms of non-metals usually gain or share electrons when they react with other atoms.
Elements that have one valence electron tend to be highly reactive and readily form positive ions by losing that electron to achieve a stable electron configuration. These elements include alkali metals like lithium, sodium, and potassium.
Atoms with 1 valence electron are typically found in Group 1 of the periodic table, known as the alkali metals. Examples include lithium, sodium, and potassium, all of which have one valence electron in their outermost energy level. This lone valence electron makes these elements highly reactive.
The alkaline earth group has two valence electrons.
Alkali metals