89  Actinium

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

+--------------------+
| 89     _           |
|       / \   ___    |
|      / _ \ / __|   |
|     / ___ \ (__    |
|    /_/   \_\___|   |
|                    |
|      Actinium      |
|     227.02775 u    |
+--------------------+

Electron Configuration: [Rn]7s2 6d1
Electronegativity:      1.1
Atomic Radius:          260 pm
Ionization Energy:      5.17 eV
Electron Affinity:
Oxidation States:       3
Standard State:         Solid
Melting Point:          1324 K
Boiling Point:          3471 K
Density:                10.07 g/cm3
Family:                 Actinide
Year Discovered:        1899
Number of Neutrons:     138
Number of Protons:      89
Number of Electrons:    89
Number of Valence:
Valency:
Group:                  3
Period:                 7
Shell:                  f-shell
Specific Heat:          0.120 J/g K
Radioactive:            1
Occurrence:             Natural
Source:                 Radioactive decay

You are viewing proxied material from tilde.pink. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.