Most basic elements: Calcium, Magnesium, Barium, Sodium, Potassium, etc.
Polonium doesn't contain another element.
Polonium doesn't contain another element.
no, it is most commonly found as a compound
hydrogen is most commonly found as a part of water with oxygen.
in an element
Rutherfordium is an artificial element and a single element.
Carbon
Iron can come in a pure metallic form but it is much more commonly found in non-metallic forms where it is combined with another element to make a compound. The most common are iron and oxygen in the forms of haematite and magnetite.
Sodium
In the element oxygen.
magnesium :)
your butt hole