Thulium

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name Thulium latin Thulium french Thulium german Thulium symbol Tm proton number 69 atomic weight 168.93421 Pauling electronegativity 1.25 electronic configuration [Xe] 4f135d06s2 >> show long melting point 1818 K, 1545°C, 2813°F boiling point 2223 K, 1950°C, 3542°F group - period 6 state (by 20°C) solid oxidation states +3

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