Why was Fanny creighton on accused, cleared and re-accused of poisoning

It was ernest rutherford

The answer should be vaporization 

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic

Ireally don’t know bruh