Question

what did marie decide to take up for her doctoral degree?
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Answer 1

Explanation:

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Marie Presents her doctoral thesis

• After thousands of crystallizations, Marie finally – from several tons of the original material – isolated one decigram of almost pure radium chloride and had determined radium's atomic weight as 225. She presented the findings of this work in her doctoral thesis on June 25, 1903.

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Answer 2

Answer:

Marie Presents her doctoral thesis

• After thousands of crystallizations, Marie finally – from several tons of the original material – isolated one decigram of almost pure radium chloride and had determined radium's atomic weight as 225. She presented the findings of this work in her doctoral thesis on June 25, 1903.