Chemistry, 31.01.2020 01:44 crystalpearl188

What important result did becquerel observe when he placed the uranium salt crystals and unexposed photographic film in a drawer?

-the crystals phosphoresced within the drawer and exposed the film.
-the crystals did not phosphoresce within the drawer but did expose the film.
-the crystals phosphoresced within the drawer but did not expose the film.
-the crystals did not phosphoresce within the drawer and did not expose the film.

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What important result did becquerel observe when he placed the uranium salt crystals and unexposed p...