how many of the elements are naturally occurring?

Question

Are the following naturally occurring?
a.) antimony - Sb
b.) uranium - U
c.) francium - Fr

I really need your answers..please!

Answer 1

Yes, all these are naturally occurring. There are 92 naturally occurring elements, Uranium is no 92. There are other elements which do not ocurr in nature, but are manufactured in nuclear reactors, sometimes in tiny quantities.
Francium is extremely rare, and only ocurrs in uranium ores as the product of nuclear decay.
The only element more rare than Francium is Astatine, which also only ocurrs as the result of radioactive decay.
Two other elements are only present as products of nuclear decay: Actinium and Protactinium

Answer 2

Only 90 of the first 92, #'s 42 & 61 are not naturally occurring.
a) Sb # 51
b) U # 92
c) Fr # 87

Answer 3

there are 92 natural occuring elements and the elements you have listed below also are natural occuring elements.

Answer 4

yes.. the three are naturally occurring elements..

for more info, visit

http://en.wikipedia.org/wiki/Antimony#Sources
http://en.wikipedia.org/wiki/Francium
http://en.wikipedia.org/wiki/Uranium

:-)