65  Terbium

 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      

+--------------------+
| 65  _____ _        |
|    |_   _| |__     |
|      | | | '_ \    |
|      | | | |_) |   |
|      |_| |_.__/    |
|                    |
|       Terbium      |
|     158.92535 u    |
+--------------------+

Electron Configuration: [Xe]6s2 4f9
Electronegativity:      
Atomic Radius:          221 pm
Ionization Energy:      5.864 eV
Electron Affinity:      
Oxidation States:       3
Standard State:         Solid
Melting Point:          1629 K
Boiling Point:          3503 K
Density:                8.23 g/cm3
Family:                 Lanthanide
Year Discovered:        1843
Number of Neutrons:     94
Number of Protons:      65
Number of Electrons:    65
Number of Valence:      
Valency:                
Group:                  
Period:                 6
Shell:                  f-shell
Specific Heat:          0.182 J/g K
Radioactive:            0
Occurrence:             Natural
Source:                 Merging neutron stars