Multiple choice

Which phenomenon was Henri Becquerel originally investigating in uranium when he discovered the new phenomenon of radioactivity?

  1. Electronegativity

  2. Phosphorescence

  3. Catenation

  4. Efflorescence
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In 1896, Henri Becquerel was investigating phosphorescence in uranium salts when he discovered a new phenomenon which came to be called radioactivity. He, Pierre Curie and Marie Curie began investigating the phenomenon. In the process, they isolated the element radium, which is highly radioactive.

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