this is a guess but
beryllium?
hydrogen is most commonly found as a part of water with oxygen.
Polonium has 33 isotopes, more than any other element, of which all are radioactive.
I think it is hydrogen
Polonium
Polonium and radium isotopes exist in the decay chains of Th-232, U-233, U-235, U-238.
Polonium with the atomic number 84 is in the group 16 and period 6 of the periodic table of Mendeleev. Some compounds of polonium are: PoO, PoO2, PoO3, PoH2, halides as PoX2, PoX4, PoX6 and the strange class of polonides (compounds of polonium with other metals). The Pauling electronegativity is 2. Possible valences are: 2, 4, 5, 6, -2. Polonium is considered generally as a metal but some chemists consider Po as a metalloid.
MMe Marie Curie is credited with two Nobel Prizes and the discovery of Radium and Polonium, the latter named after her native Poland- she was a naturalized French citizen. Some other Female scientist discovered an element in tne thirities but the name escapes me. It might have been Francium ( the element).
Polonium 210-----------alpha particles-----------Lead 206 Polonium 209-----------alpha particles-----------Lead 205 Polonium 208-----------alpha particles-----------Lead 204 Polonium 214-----------alpha particles-----------Lead 210 Polonium 218-----------alpha particles-----------Lead 214 (99,98 %) Polonium 218-----------beta particles------------Astatin 218 (o,o2 %) For other isotopes see the list at: http://en.wikipedia.org/wiki/Polonium#Isotopes
Phosphate in not an element, it is not the only element found in DNA, and is found in other places.
Yes, polonium is a reactive metal but the chemistry of polonium is not known in details.
Impossible to find pure polonium; it is necessary to separate polonium from other radioisotopes.
Polonium is a radioactive metallic element. One industrial use is in antistatic brushes or devices. It has more isotopes than any other element, of which all are radioactive. It is a known carcinogen in tobacco smoke.