Halogens, group 17 on the Periodic Table, typically gain or share one electron in covalent bonds
== == When metals react with other elements, the atoms of the metals give up their valence electrons.
Atoms of non-metals usually gain or share electrons when they react with other atoms.
When nonmetals and metals react, it is typically the metal atoms that lose electrons. Metals tend to have low electronegativities, allowing them to easily give up electrons and form positive ions (cations). In contrast, nonmetals have higher electronegativities and tend to gain electrons, forming negative ions (anions). This transfer of electrons from metals to nonmetals is a key characteristic of ionic bonding.
Metals react with oxygen because of a process called oxidation. When metals are exposed to oxygen in the air, the metal atoms lose electrons to the oxygen atoms, forming metal oxides. This reaction occurs because metals have a tendency to lose electrons and oxygen has a high affinity for gaining electrons. The formation of metal oxides is a type of chemical reaction that changes the properties of the metal and can lead to corrosion or rusting.
Metals loss electrons and nonmetals gain 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.
Nonmetals gain 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.
Atoms of non-metals usually gain or share electrons when they react with other atoms.
Atoms of non-metals usually gain or share electrons when they react with other atoms.
metals lose electrons when they react with a non-metal
When nonmetals and metals react, it is typically the metal atoms that lose electrons. Metals tend to have low electronegativities, allowing them to easily give up electrons and form positive ions (cations). In contrast, nonmetals have higher electronegativities and tend to gain electrons, forming negative ions (anions). This transfer of electrons from metals to nonmetals is a key characteristic of ionic bonding.