Period 1 Period 2 Period 3 Period 4 Period 5 Period 6 The S Orbital The P Orbital The D Orbital The F Orbital Transition Elements Lanthanide Series Actinide Series Multivalence1 Multivalence2 Rota Period I II III IV V VI VII VIII 1+ 2+ 3+ 4+ 5+ 6+ 7+ 8+ 3- 2- 1- 0 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 Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db The Shovel About the Rota Period Rota Period Explained (pdf) Rota Period Abstract Published in JSE (pdf) Atomic Radius, Electronegativity, Electropositivity, First Ionization Energy, Mass + Z, Metallic Properties and Oxidation State Trends Links Contact me *** Iron (Fe) is an example of how multi valence elements are displayed. © 2007 James L. Rota, Rotaperiod.com

Fm - Fermium Atomic Number: 100 Atomic Weight (Mass): 257.00000 Melting Point: 1527 °C Boiling Point: 0 °C Orbital Class: 5f Orbital: [Rn] 5f12 7s2 Class: Actinides Electronegativity: 1.3 Density: unknown Van der Waals Radius: .200 nm Ionic Radius: unknown First Ionization Energy: 627.16 kJ mol-1 Second Ionization Energy: unknown Third Ionization Energy: unknown Heat of Fusion: unknown Heat of Vaporization: unknown Heat of Atomization: 141 kJ mol-1 Electrical Conductivity: unknown Thermal Conductivity: unknown Related To: B, Al, Sc, Co, Ni, Ga, Y, Ag, In, La, Nd, Pm, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, Au, Tl, Ac, Cm, Cf, Es, Fm, Md, No, Lr, Valences I II III IV V VI VII VIII 1+ 2+ 3+ 4+ 5+ 6+ 7+ 8+ 3- 2- 1- 0 * Fm Fermium is a Block F, Group 3, Period 7 element. The electronic configuration is [Rn] 5f12 7s2. In its elemental form fermium's CAS number is 7440-72-4. The fermium atoms Van der Waals radius is 200.pm. Fermium was discovered by Albert Ghiorso in 1953. Named in honour of Enrico Fermi. French: Fermium, German: Fermium, Italian: fermio, Portuguese: fermio, Spanish: fermio, Swedish: Fermium This element can be purchased in a variety of forms including as metal, compounds, ultra high purity, nanoparticles, and isotopes at www.americanelements.com Reproduced With Permission: www.americanelements.com ####### Click Here For More Information About Fermium: Wikipedia.org Home © 2007 Rotaperiod.com