Elements of group 1 readily form ions having a charge of +1.
Group 8 rarely forms ions since it has steal/lose more electrons to follow the octet rule (having eight valence electrons).
Groups 1 and 17.
The family of elements that react readily with metals is the halogens. This group includes elements such as fluorine, chlorine, bromine, iodine, and astatine. Halogens are highly reactive nonmetals that readily form compounds with metals by gaining an electron to achieve a stable electron configuration.
Alkaline Earth metals
Most of the elements in the top right of the period table (but not "group 8" - the furthest column to the right) will readily form anions (negatively charged ions) that can then form ionic bonds. Examples are O, N, P and S
Group 8 rarely forms ions since it has steal/lose more electrons to follow the octet rule (having eight valence electrons).
Astatine wouldn't form salt as readily as other elements in Group 17. Astatine is a radioactive metalloid. Other elements in Group 17 are nonmetals.
Because Group 13 elements form both ionic and covalent bonds readily.
Group 18 elements, which are also known as noble gases, rarely form chemical compounds.
Group 1 and group 2 elements are reactive metals and react readily with water. They also react readily at high temperatures with oxygen. Over the millenia any free deposits would react to form compounds.
Noble gasses rarely form compounds. They are in the 18th period. He, Ne, Kr are few examples.
Groups 1 and 17.
The family of elements that react readily with metals is the halogens. This group includes elements such as fluorine, chlorine, bromine, iodine, and astatine. Halogens are highly reactive nonmetals that readily form compounds with metals by gaining an electron to achieve a stable electron configuration.
Alkaline Earth metals
No. Group 18 elements are already gases Also also there are non metals that are solid at room temperature.
reactive
They are the noble gases whose outermost (valency) orbitals are full.