Nonmetals are in the groups 17 and 18. But the groups 14-17 contain also nonmetals.
The halogens are the most reactive nonmetals. They belong to Group 17 on the periodic table.
The nonmetals.
Group 5 nonmetals have a charge of -3. Examples of group 5 nonmetals include nitrogen (N) and phosphorus (P), which commonly form ions with a -3 charge by gaining 3 electrons.
Group 6
Group 6
Metals: alkaline metals Nonmetals: halogens
group 18
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Nonmetals are primarily found in Groups 14 to 18 of the periodic table. The specific groups containing nonmetals include Group 14 (carbon group), Group 15 (pnictogens), Group 16 (chalcogens), Group 17 (halogens), and Group 18 (noble gases). Notable nonmetals in these groups include carbon (C), nitrogen (N), oxygen (O), fluorine (F), and neon (Ne).
The most active group of nonmetals are those in Group 17, and these are the halogens. The list is headed by fluorine, which is the most reactive element of the group and of the Periodic Table as a whole.
The Noble Gases.
halogen