Sodium
Platinum is an element, not a mixture or compound. It is a rare and valuable metal that is found in its pure form in nature and consists of only platinum atoms.
Uranium is found in the earth only in the form of compounds. Uranium is present in cca. 200 minerals.
Sodium is a compound.
Hydrocarbons are not an element, they are a type of compound. They are composed of only hydrogen and carbon atoms.
Yes, radium is found in nature as a trace element in uranium ores. It is typically found in combination with other elements in these ores, and it is not typically found in its pure, uncombined form in nature.
Platinum is an element, not a mixture or compound. It is a rare and valuable metal that is found in its pure form in nature and consists of only platinum atoms.
The element my be rare because it is part of a compound and cannot be found as an element as itself in nature. The only way to get the element is to extract it from the compound. That may not be very easy.
Berkelium is only an artificial element.
Alkaline earth metals are found in nature only in mineral or compound forms, due to their high reactivity.
Technetium is the only element that has not been found in nature but has been produced synthetically.
Seaborgium is an artificial element, not found in the nature -Sg exist only in some rare laboratories.
Neptunium is an artificial chemical element but neptunium can be found also in the nature as a result of decay processes in uranium ores, only in ultratraces.
An element is only a chemical element, only a single type of atoms.A compound contain 2 or more atoms of different atoms.Matter can be an element, a compound or a mixture of compounds.
a subscript found at the bottom right of the letters in the compound. if there is no number, that indicates there is only one of that element, or atom.
No, copper is not a chemical compound. Its a chemical element.A chemical element is a substance made up of atoms of only one type. IE: Copper. Or hydrogen. Or Helium. Or Lithium... (there are ninety two naturally occurring elements, and several more man made ones)
Uranium is found in the earth only in the form of compounds. Uranium is present in cca. 200 minerals.
Nitrogen is an element. It can be found in the periodic table.