Sulfur
Sulfur is not a highly reactive element under ordinary condition.
No, Hydrogen gas is the diatomic element H, so it appears in nature as H2. The most common form of Hydrogen combined with Oxygen is H2O, or water.
pure element
Only mercury is a chemical element which occur in the nature as a liquid.
Mendelevium is an artificial element.
Mercury is a natural element. It is not man made or combined in nature. It is not a compound.
A pale yellow non-metallic element occurring widely in nature in several free and combined allotropic forms. It is used in black gunpowder, rubber vulcanization, the manufacture of insecticides and pharmaceuticals, and in the preparation of sulfur compounds such as hydrogen sulfide and sulfuric acid. The IUPAC has adopted the spelling "sulfur", as has the Royal Society of Chemistry Nomenclature Committee.
magnesium :)
Platinum usually exists uncombined in nature or alloyed with iridium.
A pale yellow nonmetallic element occurring widely in nature in several free and combined allotropic forms. It is used in black gunpowder, rubber vulcanization, the manufacture of insecticides and pharmaceuticals, and in the preparation of sulfur compounds such as hydrogen sulfide and sulfuric acid. Atomic number 16; atomic weight 32.066; melting point (rhombic) 112.8°C, (monoclinic) 119.0°C; boiling point 444.6°C; specific gravity (rhombic) 2.07, (monoclinic) 1.957; valence 2, 4, 6.
Sulfur is not a highly reactive element under ordinary condition.
Sulfur is not a highly reactive element under ordinary condition.
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No, Hydrogen gas is the diatomic element H, so it appears in nature as H2. The most common form of Hydrogen combined with Oxygen is H2O, or water.
An element occur in nature as a pure element or as a compound.
This is a poor question. Chemically "O and S are totally non-metallic" - Chapter 15, Group VI - the chalcogens - Concise Inorganic Chemistry by J D Lee, Fourth Ed. Sulphur is moderately reactive towards other elements as compared to O. This is due to its allotropic nature. But it does react. And that makes it an element because it is in the periodic table
Yes, carbon is always combined with something in nature