Page 1 of 1: a natural radioactive substance found in small ....

dr_nidhi · Credits: 12996 My Scrapbook My Reading List 5 Books

...quantities in body is

a.potassium 40
b.gallium
c.iodine 131
c.radium

decembermist · Credits: 41081 My Scrapbook

draditithegreat · Credits: 1247960 My Scrapbook

does anyone has the ans?

pratik · Credits: 11374 My Scrapbook

answer is potassium 40

Natural or Artificial Radioactivity?

Radioactive substances can be natural or artificial. Many natural radioactive substances have been around since the beginning of time. For example, all rocks and soils contain small amounts of the radioactive element uranium. Uranium produces a radioactive gas called radon which seeps out of the ground slowly. After a few days the radon changes into two other radioactive substances, lead-210 (radioactive form of lead) and polonium-210 which can remain in the environment for many years.

Lead-210 and polonium-210 are naturally radioactive substances. They are part of the natural environment everywhere on earth. The levels of lead-210 and polonium-210 in caribou have not changed since measurements began in the 1960's. Indeed, these levels have probably remained unchanged for thousands of years.

Another natural radioactive substance is potassium-40 (radioactive form of potassium), which is a part of all living things.

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