TEXT 61 Pm Promethium (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      
       
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       | 61____             |
       |  |  _ \ _ __ ___   |
       |  | |_) | '_ ` _ \  |
       |  |  __/| | | | | | |
       |  |_|   |_| |_| |_| |
       |                    |
       |     Promethium     |
       |     144.91276 u    |
       +--------------------+
       
  TEXT Wiki Article:           Promethium
       Electron Configuration: [Xe]6s2 4f5
       Electronegativity:      
       Atomic Radius:          236 pm
       Ionization Energy:      5.55 eV
       Electron Affinity:      
       Oxidation States:       3
       Standard State:         Solid
       Melting Point:          1315 K
       Boiling Point:          3273 K
       Density:                7.26 g/cm3
   DIR Family:                 Lanthanide
       Year Discovered:        1945
       Number of Neutrons:     84
       Number of Protons:      61
       Number of Electrons:    61
       Number of Valence:      
       Valency:                
       Group:                  
       Period:                 6
   DIR Shell:                  f-shell
       Specific Heat:          
       Radioactive:            1
       Occurrence:             Rare
   DIR Source:                 Radioactive decay