Halogens, group 17 on the Periodic Table, typically gain or share one electron in covalent bonds
non-metals are a reaction to atoms. Atoms do not gain any reaction.
== == 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.
Metals loss electrons and nonmetals gain electrons.
Metals are likely to make anions. So they lose electrons to get a positive charge. The other elements gain electrons and get negatively charged.
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== == 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 generally react with atoms of metals by forming ionic compounds. This is achieved when non-metals gain electrons or a metal atom loses electrons.
Atoms of non-metals usually gain or share electrons when they react with other atoms.
When a metal reacts with a non-metal, the electrons move from the metal to the non-metal. This is because the metal can achieve valence when it loses the electrons in its outer shell. The non-metal can also achieve full valence by gaining the electron in its outer shell.
They tend to gain electrons when reacting with a metal. Metals generally are short of a full octet by 1 to 4 valence electrons. It is easier to drop 2 electrons than try to gain 6 electrons. The elements in group four can go either way, but the other metals will give up electrons, and non-metals will take them.