Francium

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name Francium latin Francium french Francium german Francium symbol Fr proton number 87 atomic weight [223] Pauling electronegativity 0.7 electronic configuration [Rn] 7s1 >> show long melting point 300 K, 27°C, 80°F boiling point - group 1 period 7 state (by 20°C) solid oxidation states +1

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