the physicist henri becquerel discovered radioactivity while working with a sample of?

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the physicist henri becquerel discovered radioactivity while working with a sample of?

a: radium
b: silicon
3: curium
4: uranium

2006-10-10 13:26:19 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

3 answers

Uranium. He placed it on a photographic plate and discovered that it left an image on the film. He then passed the radiation given off by the Uranium through an electric field and the radiation beam separated into 3 different types: alpha, beta, gamma.

2006-10-10 13:34:34 · answer #1 · answered by physandchemteach 7 · 1⤊ 2⤋

4 Uranium salts

2006-10-10 13:28:39 · answer #2 · answered by The Cheminator 5 · 0⤊ 1⤋

petrified dinosaur crap! radium my friend.

2006-10-10 13:34:30 · answer #3 · answered by Anonymous · 0⤊ 2⤋