What is the rarest element on earth?

Question

a pic of it would be nice?

Answer 1

Astatine. Less than one ounce at any given time on earth.

http://www.webelements.com/webelements/elements/media/element-pics/At.jpg

Answer 2

Astatine is the rarest naturally-occurring element, with the total amount in Earth's crust estimated to be less than 1 oz

Answer 3

THE WORLD'S RAREST ELEMENT has successfully been trapped, setting the stage for high-precision tabletop measurements on how the weak nuclear force manifests itself at the atomic level. Francium is the least stable of the first 103 elements on the periodic table; less than an ounce of it exists on the Earth at any one time. Creating francium artificially has not been a problem; however, it has been a major challenge to trap francium atoms and study them. In work described at last week's APS Meeting, researchers at SUNY-Stony Brook (Luis Orozco, [e-mail]) produce a million ions per second of francium-210 (half-life=3 minutes) at their accelerator. After converting the ions into neutral atoms and slowing them down considerably, they send the francium into a magneto-optical trap, a device employing six laser beams and a nonuniform magnetic field. Inside the traps, the atoms bounce back and forth between specially coated glass walls, slowing down some atoms enough to be caught at the center of the trap. With their setup, the researchers can confine approximately 10,000 francium atoms at a time. Researchers at Stony Brook, Berkeley, and elsewhere have previously used magneto-optic traps to collect radioactive atoms, but a challenge with francium has been to figure out how to tune the trapping lasers since there are no known stable isotopes of francium to use as a reference. Future studies of the 7S-8S francium energy transition, forbidden by the electromagnetic interaction because it violates parity but permitted by the parity-violating weak interaction, could then be used to gain precise information on the weak force. The effects of parity violation are at least 18 times more pronounced in francium than in cesium, another atom in which parity violation has been studied. (See also J.E. Simsarian et al, Physical Review Letters, 6 May 1996.)

Answer 4

by using fact a million or 2 companies that very own like ninety 9% of the diamond mines as an occasion, mine a extensive sort of em, then carry em lower back in save and cut back the quantity contained available for this reason pushing the fees bigger.

Answer 5

Astatine

Answer 6

Common sense... though (like hydrogen) it can be viewed as highly positive or highly negative, it does not bind well to radicals on either the left hand or right hand side of the table. In fact, it does not bind well with anything volatile.

Under intense pressure, even in its stable form, it can evaporate quickly.

It is only ever found in small concentrations, never in its natural state, and is difficult to extract. It is often located deep within wells of wisdom that have dried up with age.

:-)

Answer 7

your best bet would be one of the man-made elements such as Ununnilium (the high atomic number ones)

Answer 8

some radioactive isotope
Californium or other man made stuff

Answer 9

Truth - and sorry no pic.