Yes, the halogens did occur in nature as free elements.
Also other elements can be involved.
118 total - 92 natural elements= 26 elements that do not naturally occur===========================
There are variety of such elements. They have not been found on earth's surface.
Halogens occurs naturally as salts; an exception is HCl from volcanoes.
Some elements occur in nature in a pure form, and not as part of a compound with other elements. Elements such as copper, silver, and gold are also minerals. Almost all pure, solid elements are mentals.
Also other elements can be involved.
how may elements occur naturally in nature
isotopes
About 80% of the first 117 elements occur in the nature in a stable manner.
118 total - 92 natural elements= 26 elements that do not naturally occur===========================
Quarks and leptons are not elements.
no. uranium and thorium occur in nature
The same reason your mother doesn't.
Only Mercury occurs in nature as a liquid in its elemental state. Bromine is also a liquid element, but does not occur in its elemental form in nature.
Basically, all (or most) of the elements found in the periodic table, up to plutonium.
There are variety of such elements. They have not been found on earth's surface.
Ionic compounds only occur between a nonmetal and metal, also Halogens and The Carbon Family do not form Ionic bonds.