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Who discovered radioactivity through experimenting with rocks and exposed photo paper?
Becqueral.
What did Henri becqueral discover?
Henri Becquerel discovered radioactivity in 1896 while studying the properties of uranium salts. This discovery paved the way for further research into nuclear physics and eventually led to the development of nuclear energy and nuclear weapons.
What year did Becqueral discover the radioactive element uranium?
Uranium was discovered by Martin Heinrich Klaproth, a German chemist, in the mineral pitchblende (a mix of uranium oxides) in 1789. Klaproth confused the oxide with the metal. In 1841 the French chemist Peligot isolated uranium as a pure metal element. Henry Becquerel (also a Frenchman) discovered the natural radioactivity of uranium in 1896.
Activity of an isotope is measured in Curies and Becquerels?
Yes.A Curie (Ci) is 3.7 x 1010 disintegrations per second, and corresponds to about 1 gram of Radium-226.A Becqueral (Bq) is 1 disintegration per second, corresponding to about 2.7 x 10-11 Ci.Also used is the microcurie, µCi, which is about 2.22 x 106 disintegrations per minute, corresponding to about 10 times the normal amount of Potassium-40 contained in a human body.
