soddy, frederick

Science Dictionary
Soddy   (sŏd'ē)  Pronunciation Key 
British chemist who was a pioneer in the study of radioactivity. With Ernest Rutherford, he explained the atomic disintegration of radioactive elements. Soddy also coined the word isotope to describe elements that were chemically identical but had different atomic weights. He was awarded the Nobel Prize for chemistry in 1921.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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