2006-08-11 12:27:03 · 11 answers · asked by spongy 2 in Science & Mathematics ➔ Chemistry
This site looks pretty good...
2006-08-11 12:33:05 · answer #1 · answered by JAMMR 2 · 2⤊ 0⤋
The radioactive elements comonly found on earth are everything with an atomic number greater than lead, Bismuth is the last element with a stable isotope while lead is the largest element to be mostly stable isotopes.
Many other isotopes such as H3, C13, O18, P32, I121,125,129 are radioactive but occur in realatively small abundance. The definition of radioactive on the periodic table is that which the most stable isotope of an element still degrades.
2006-08-11 21:18:06 · answer #2 · answered by piercesk1 4 · 0⤊ 0⤋
Pretty much every element has at least one radioactive isotope. The seriously hardcore radioactive elements start with Uranium which has the atomic numer of 92. All elemants with atomic numbers above 92 are man made and are very radioactive
2006-08-11 23:28:30 · answer #3 · answered by xox_bass_player_xox 6 · 0⤊ 0⤋
the radioactive element in the periodic table starts after uranium. these are man-made elements that are produced in the laboratory and named after famous scientist or places. some isotopes of naturally-occurring elements are also radioactive like iodine, strontium, and others.
2006-08-11 19:53:14 · answer #4 · answered by ma_jo26 1 · 0⤊ 0⤋
All of them are. Hydrogen is radioactive. As in the Hydrogen bomb. Carbon is radio active. As in Radio Carbon Dating. Uranium. As in Nuclear Reactors. Some elements like Iodine are used in Nuclear Medicine. As in Radioactive Iodine. Anything that has a mass can become radioactive. Anything is made of elements.
2006-08-11 19:44:19 · answer #5 · answered by sandwreckoner 4 · 0⤊ 1⤋
If you don't have a periodic table of elements that says which one's are radioactive or not, then you need to get a better one.
2006-08-11 19:33:28 · answer #6 · answered by happiest_phantom 2 · 0⤊ 1⤋
Almost all the elements have a radioactive isotope. i.e. H3 is the first (tritium - an isotope of hydrogen). From there, I think every element has radioactive isotopes
2006-08-11 20:19:52 · answer #7 · answered by jdomanico 4 · 0⤊ 0⤋
Every single element has at least one unstable (and therefore radioactive) isotope (even if their existance is extraordinarily short)
And there are a few that have no stable isotope at all.
2006-08-11 19:39:28 · answer #8 · answered by Vincent G 7 · 0⤊ 0⤋
technetium, uranium, plutonium, promethium, polonium, astatine, radon, radium, francium, actinium, thorium, protactinium, neptunium, americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium, lawrencium, rutherfordium, dubnium, seaborgium, bohrium, hassium, meitnerium, and the other manmade ones 110 and up
2006-08-11 19:36:57 · answer #9 · answered by mojopez 4 · 0⤊ 0⤋
Technetium,Prometium,Polonium,Astaline,Francium,Radium,Thorium,Actinium,Uranium,Neptunium,Plutonium,Curium,Nobelium ..... this are some of the elements that i know .......
2006-08-11 19:43:48 · answer #10 · answered by Pinku 2 · 0⤊ 1⤋