`atomic-research` Related Article Results

Francium is an extremely radioactive and unstable element with atomic number 87 and chemical symbol Fr, belonging to the alkali metals group in the periodic table and being the heaviest known alkali metal. Classification and Basic Properties Francium is an alkali metal located in group 1A (group 1) of the seventh period of the periodic table. Its electron configuration is [Rn]7s¹, carrying a single valence electron in its outermost shell. This structure makes francium highly chemically reactive