Henri Becquerel Discovered This Property When Some Uranium Darkened His Photographic Plate

Jeopardy Answer

Your clue is "Henri Becquerel Discovered This Property When Some Uranium Darkened His Photographic Plate". Here we go, the category is ROCKS & MINERALS. The contestants made their wages and in a moment I will give you the final Jeopardy answer. You have thirty seconds to answer it in the form of a question. Make sure it is in the form of a question.

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Background

This answer is categorized as ROCKS & MINERALS. We last updated this Jeopardy answer, clue, and question on 02-11-2021. We were able to source this question from Jeopardy! World Tour.

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