Neon is essentially inert and does not form compounds in the ordinary sense. As you suggest it occurs in it elemental form and is recovered from air. Please see the link.
Sodium does occur naturally in the earth. However it is a very reactive metal and only occurs as compounds of sodium (e.g. sea salt NaCl).
Sulfur does not occur in elemental form in the human body. Instead, sulfur is present in various compounds, which are primarily in solid or dissolved state.
Thallium, discovered in 1861, does occur naturally, but not in its pure form.
:O:=:O:Standard form of oxygen. It's elemental and gaseous form. O2
The elements that natural occur in a bond is convered by the HOBrFINCl rule, with some exceptions. These non-metals naturally exist in compounds: H2 O2 Br2 F2 I2 N2 Cl2 as well as O3 P4 S8 there is no metals that exist in pairs or in compounds naturally without a chemical reaction.
Sodium is an extremely reactive element, meaning that it is unstable in its elemental form and stable in compounds. It will react spontaneously with oxygen, water, carbon dioxide, and even nitrogen. As a result, it does not naturally occur in elemental form.
Not in elemental form: it is too reactive.
NO!!! It does not occur naturally. However, its mineral ores are very common. e.g. Haematite, Magnetite.
Under standard temperature and pressure, elemental fluorine is a yellowish gas. However, fluorine is exceedingly reactive, and thus in nature it is always found bound to other elements, commonly in salts as the fluoride ion (F-).
Elemental, as in "elemental copper" as opposed to copper ore. It's POSSIBLE that the word you're looking for might be "noble" though some metals that are not noble metals can occasionally be found in elemental form: iron meteorites, for example.
No, noble gas compounds can only be produced artificially.
Yes, bismuth in some form is naturally occurring. It may or may not occur in elemental form.
Germanium is a naturally occurring element, but does not occur in pure form on the Earth (only in compounds).
waterANS2:By definition, no substance fits that definition because a mineral is naturally occurring and solid at room temperature. What the question seems to be fishing for is elemental mercury. Elemental mercury does not occur naturally.
Please be more specific. Found by whom? or do you mean what were the first compounds to occur on earth naturally?
No. Magnesium is not a rock; it is a metallic element. It is present in some of the minerals found in igneous rocks. It does not occur naturally in its elemental form.
Sodium does occur naturally in the earth. However it is a very reactive metal and only occurs as compounds of sodium (e.g. sea salt NaCl).