Uranium because uranium has the highest atomic number, 92, of the natural, actinide elements. Elements higher than 92 are man-made elements. Check the periodic tables to see for yourself!~
Uranium, thorium, actinium, protactinium; in extremely low concentrations, also plutonium and neptunium.
This element is plutonium (Pu).
uranium
It is the atom
the answer is that it occurs as a compound, not an element
Blood is made up of several different substances, whereas graphite occurs naturally in the form of graphite.
Diamonds formed in laboratories are formed from carbon, which is an element. By definition, a mineral occurs naturally. So no, a lab-formed diamond is not a mineral.
if you mean 'invented', no one invented it, it occurs naturally. it was naturally
Uranium is the heaviest naturally occurring actinide.
Uranium
Uranium
URANIUM (:
Fluorine is an element. It occurs naturally.
In the atmosphere.
It is the atom
atom is the smallest part of element
the answer is that it occurs as a compound, not an element
No, Bromine is not a synthetic element, it occurs naturally
Radon
Iron is an element and occurs naturally in the universe. It is not made.