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How was radioactivity first discovered? By whom?

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 2Q Chapter 17

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 2Q

How was radioactivity first discovered? By whom?

Step-by-Step Solution:

Solution 2Q :

Step 1:

Radioactivity was first discovered by Antoine-Henri Becquerel, a french physicist.

Henri Becquerel was researching on the discovery of X-rays. He hypothesized that X-rays were emitted in conjunction with phosphorescence. Phosphorescence  is a type of photoluminescence related to fluorescence that re-emits the light it absorbs. To test this hypothesis, Becquerel placed crystals that were composed of potassium uranyl sulfate which is a compound known to phosphoresce that is placed on top of a photographic plate wrapped in black cloth. He then placed the wrapped plate and the crystals outside, to expose them to sunlight. Becquerel performed the experiment several times and always got the same result that the photographic plate showed a bright...

Step 2 of 3

Chapter 17, Problem 2Q is Solved
Step 3 of 3

Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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How was radioactivity first discovered? By whom?

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