(TXT) 69 Tm Thulium (plaintext)
       
        H                                                  He
        Li Be                               B  C  N  O  F  Ne
        Na Mg                               Al Si P  S  Cl Ar
        K  Ca Sc Ti V  Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
        Rb Sr Y  Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I  Xe
        Cs Ba La Hf Ta W  Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
        Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
                                                             
              Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er[Tm]Yb Lu      
              Th Pa U  Np Pu Am Cm Bk Cf Es Fm Md No Lr      
       
 (DIR) Left
 (DIR) Up
 (DIR) Down
 (DIR) Right
 (DIR) List All
       
       +--------------------+
       | 69_____            |
       |  |_   _| __ ___    |
       |    | || '_ ` _ \   |
       |    | || | | | | |  |
       |    |_||_| |_| |_|  |
       |                    |
       |       Thulium      |
       |     168.93422 u    |
       +--------------------+
       
 (TXT) Wiki Article:           Thulium
       Electron Configuration: [Xe]6s2 4f13
       Electronegativity:      1.25
       Atomic Radius:          227 pm
       Ionization Energy:      6.184 eV
       Electron Affinity:      
       Oxidation States:       3
       Standard State:         Solid
       Melting Point:          1818 K
       Boiling Point:          2223 K
       Density:                9.32 g/cm3
 (DIR) Family:                 Lanthanide
       Year Discovered:        1879
       Number of Neutrons:     100
       Number of Protons:      69
       Number of Electrons:    69
       Number of Valence:      
       Valency:                
       Group:                  
       Period:                 6
 (DIR) Shell:                  f-shell
       Specific Heat:          0.160 J/g K
       Radioactive:            0
       Occurrence:             Natural
 (DIR) Source:                 Merging neutron stars