Symbol Fn
Atomic number 130
Pronunciation /'frank•lin•ē•(y)üm/
Named after Benjamin Franklin
Name in Saurian Vhudbcadaim (Vd)
Systematic name Untrinilium (Utn)
Location on the periodic table
Period 8
Family Franklinium family
Series Lavoiside series
Coordinate 5g10
Element left of Franklinium Berzelium
Element right of Franklinium Darwinium
Atomic properties
Subatomic particles 481
Atomic mass 353.9322 u, 587.7182 yg
Atomic radius 167 pm, 1.67 Å
Covalent radius 179 pm, 1.79 Å
van der Waals radius 195 pm, 1.95 Å
Nuclear properties
Nucleons 351 (130 p+, 221 no)
Nuclear ratio 1.70
Nuclear radius 8.43 fm
Half-life 9.6449 y
Decay mode Alpha decay
Decay product 347By
Electronic properties
Electron notation 130-8-24
Electron configuration [Og] 5g5 6f3 7d1 8s2 8p1
Electrons per shell 2, 8, 18, 32, 37, 21, 9, 3
Oxidation states +3, +5, +6, +7, +8
(a strongly basic oxide)
Electronegativity 1.36
First ionization energy 596.0 kJ/mol, 6.177 eV
Electron affinity 9.9 kJ/mol, 0.103 eV
Physical properties
Bulk properties
Molar mass 353.932 g/mol
Molar volume 54.420 cm3/mol
Density 6.504 g/cm3
Atomic number density 1.70 × 1021 g−1
1.11 × 1022 cm−3
Average atomic separation 449 pm, 4.49 Å
Speed of sound 1866 m/s
Magnetic ordering Paramagnetic
Crystal structure Base-centered orthorhombic
Color Bluish gray
Phase Solid
Thermal properties
Melting point 409.68 K, 737.42°R
136.53°C, 277.75°F
Boiling point 914.70 K, 1646.45°R
641.55°C, 1186.78°F
Liquid range 505.02 K, 909.03°R
Liquid ratio 2.23
Triple point 409.68 K, 737.42°R
136.53°C, 277.75°F
@ 47.465 mPa, 3.5602 × 10−6 torr
Critical point 2237.47 K, 4027.45°R
1964.32°C, 3567.78°F
@ 571.1412 MPa, 5636.744 atm
Heat of fusion 5.651 kJ/mol
Heat of vaporization 108.592 kJ/mol
Heat capacity 0.06870 J/(g•K), 0.12366 J/(g•°R)
24.316 J/(mol•K), 43.768 J/(mol•°R)
Abundance in the universe
By mass Relative: 6.34 × 10−26
Absolute: 2.13 × 1027 kg
By atom 4.70 × 10−24

Franklinium is the provisional non-systematic name of an undiscovered element with the symbol Fn and atomic number 130. Franklinium was named in honor of Benjamin Franklin (1706–1790), who revolutionized the wave theory of light, investigated the effects of temperature on electrical conductivities, and proved that lightning is a form of electricity . This element is known in the scientific literature as untrinilium (Utn) or simply element 130. Franklinium is the tenth element of the lavoiside series and located in the periodic table coordinate 5g10.

Atomic properties Edit

Franklinium has the atomic radius of one-sixth of a nanometer. The atom contains 8 energy levels and 23 orbitals surrounding the nucleus. Energy levels and orbitals contain electrons, filled in order of ground state energies. In total, there are 130 electrons with the average of 16 electrons per energy level and 6 per orbital. The number of electrons in the order of energy levels are 2, 8, 18, 32, 37, 21, 9, 3. All those electrons orbit the nucleus that contains three times more particles than electrons. Nucleus contains two types of particles, one containing just the identical number of that particle as electrons, a reason why this atom has no overall charge.

Isotopes Edit

Like every other element heavier than lead, franklinium has no stable isotopes. The longest-lived isotope is 351Fn with a half-life of 9.645 years. It alpha decays to 347By. 354Fn has a half-life of 403 days while 356Fn has a half-life of 203 days. All of the remaining isotopes have half-lives less than 50 hours while majority of these have half-lives less than 8 minutes.

Franklinium also has metastable isomer, the longest-lived is 348m3Fn with a half-life of 17 minutes. 348m1Fn has a half-life of 2.5 minutes while 351m1Fn 1.5 minutes. All the rest have half-lives less than three seconds and most will decay to corresponding ground state isotopes through isomeric transformation while others alpha decay, beta decay, cluster decay or undergo fission.

Chemical properties and compounds Edit

Franklinium has chemical properties similar to neighboring elements. Based on its electronegativity of 1.36 and first ionization energy of 6.18 eV, franklinium is moderately active. Elemental franklinium is unstable in the air as it loses luster due to the formation of oxide coating, which protects the metal inside. The element mainly exhibits +6 and +8 oxidation states as well as less common +3, +5 and +7 states. In aqueous solutions, however, +5 is slightly more common than +6. When dissolved in water, Fn3+ is green, Fn5+ is blue, and Fn6+ is dark purple. The metal is soluble in mineral acids such as sulfuric acid and hydrochloric acid.

Franklinium burns with an orange-yellow flame to form dark blue-green powder franklinium(VI) oxide (FnO3) or greenish black franklinium(VIII) oxide (FnO4). Franklinium also burns in pure carbon dioxide atmosphere to form franklinium(VI) carbonate (Fn(CO3)3), which decomposes at 727 K (849°F) to FnO3 and CO2. Franklinium(VI) carbide (Fn2C3) forms when Fn(CO3)3 is heated with alkaline oxides such as calcium oxide (CaO) and water.

2 Fn(CO3)3 + 2 CaO + 2 H2O → Fn2C3 + 2 Ca(OH)2 + 3 CO2 + 6 O2

Franklinium halides can easily form, such as FnF8 and FnCl6. It can also form oxyhalides (when halide reacts with water) and nitrohalides, such as FnNF3, obtained when metal is heated with nitrogen trifluoride.

Organofranklinium are organic compounds of franklinium, including triethylfranklinium ((C2H5)3Fn), pentaphenylfranklinium ((C6H5)5Fn), and franklinium triformate (Fn(HCO2)3).

Physical properties Edit

Franklinium is a bluish gray metal with a mediocre density of 6.5 g/cm3. In one cm3 cube, there are approximately 11 sextillion (1.1 × 1022) atoms and the average distance between atoms is 460 picometers (4.60 angstroms). Franklinium forms base-centered orthorhombic, meaning atoms arrange to form a cube as well as one at the center of two sides. At its melting point of 278°F, franklinium would appear as a greenish gray liquid. The maximum temperature in which liquid franklinium is stable is 1187°F. Franklinium vapor is dark golden color at 1187°F. In order to melt one mole of franklinium, 5.65 kilojoules of energy is needed, while in order to boil one mole of it, 108.59 kilojoules is required.

Occurrence Edit

It is certain that franklinium is virtually nonexistent on Earth, and is believe to barely exist somewhere in the universe. Every element heavier than iron can only naturally be produced by exploding stars. But it is virtually impossible for even the most powerful supernovae or most violent neutron star collisions to produce this element through r-process because there's not enough energy available or not enough neutrons, respectively, to produce this hyperheavy element. . Instead, this element can only be produced by advanced technological civilizations, virtually accounting for all of its abundance in the universe. An estimated abundance of franklinium in the universe by mass is 6.34 × 10−26, which amounts to 2.13 × 1027 kilograms or more than Jupiter's mass worth of this element.

Synthesis Edit

To synthesize most stable isotopes of franklinium, nuclei of a couple lighter elements must be fused together, and right amount of neutrons must be seeded. This operation would be impossible using current technology since it requires a tremendous amount of energy, thus its cross section would be so low that it is beyond the technological limit. Here's couple of example equations in the synthesis of the most stable isotope, 351Fn.

Pb + 114
Cd + 29 1
n → 351
Ra + 98
Mo + 27 1
n → 351
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 H He
2 Li Be B C N O F Ne
3 Na Mg Al Si P S Cl Ar
4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
6 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
7 Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
8 Nw G Ls Dm Ms T Dt Mw Pk By Bz Fn Dw To Pl Ah My Cv Fy Chd A Ed Ab Bu Du Sh Hb Da Bo Fa Av So Hr Wt Dr Le Vh Hk Ke Ap Vw Hu Fh Ma Kp Gb Bc Hi Kf Bn J Hm Bs Rs
9 Me Jf Ul Gr Mr Arm Hy Ck Do Ib Eg Af Bhz Me Zm Qtr Bhr Cy Gt Lp Pi Ix El Sv Sk Abr Ea Sp Ws Sl Jo Bl Et Ci Ht Bp Ud It Yh Jp Ha Vi Gk L Ko Ja Ph Gv Dc Bm Jf Km Oc Lb
10 Io Ly