Element Fr Discovered by Marguerite Perey in 1939

This page is the CodyCross answer for the clue below from Greece, Group 661, Puzzle 5 (Great Philosophers).

Question is: Element Fr Discovered by Marguerite Perey in 1939

and the answer is: FRANCIUM

Word Meaning:

FRANCIUM — The chemical element (symbol Fr) with an atomic number of 87. It is an intensely radioactive alkali metal that is not found in nature.

Definitions from Wiktionary.

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Element Fr discovered by Marguerite Perey in 1939 — CodyCross Answer | CodyCross Solutions