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thulium electron configuration

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  • thulium electron configuration

    Thulium is a substance component with the image Tm and nuclear number 69. It is the thirteenth and third-last component in the lanthanide series. Like different lanthanides, the most well-known oxidation state is +3, found in its oxide, halides, and different mixtures; in any case, the +2 oxidation state can likewise be steady.
    Symbol: Tm
    Electron configuration: [Xe] 4f136s2
    Atomic number: 69
    Atomic mass: 168.93421 u
    Melting point: 1,545 °C
    Discovered: 1879
    Discoverer: Per Teodor Cleve
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