67  Holmium

 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      

+--------------------+
| 67  _   _          |
|    | | | | ___     |
|    | |_| |/ _ \    |
|    |  _  | (_) |   |
|    |_| |_|\___/    |
|                    |
|       Holmium      |
|     164.93033 u    |
+--------------------+

Electron Configuration: [Xe]6s2 4f11
Electronegativity:      1.23
Atomic Radius:          216 pm
Ionization Energy:      6.022 eV
Electron Affinity:      
Oxidation States:       3
Standard State:         Solid
Melting Point:          1747 K
Boiling Point:          2973 K
Density:                8.80 g/cm3
Family:                 Lanthanide
Year Discovered:        1878
Number of Neutrons:     98
Number of Protons:      67
Number of Electrons:    67
Number of Valence:      
Valency:                
Group:                  
Period:                 6
Shell:                  f-shell
Specific Heat:          0.165 J/g K
Radioactive:            0
Occurrence:             Natural
Source:                 Merging neutron stars