Elements
100

Fm

Fermium

Fermium (Fm) is a silvery-white colored radioactive metal that has the atomic number 100 in the periodic table. It is an Actinoid Metal with the symbol Fm.

Fermium is a synthetic element that can be formed from neutron bombardment. It is the last known element that has been produced in quantities but to this day pure fermium metal has not been produced. Fermium was discovered in the fallout from the nuclear explosion of Ivy Mike, the first successful hydrogen bomb. It was discovered by the scientist who discovered Einsteinium, Albert Ghiorso. It draws its name from Enrico Fermi. Fermium is a synthetic element, any Fermium that may have existed on earth would have decayed due to its short half life. Most Fermium is produced in laboratories. Fermium is not used due to its high radioactivity, it has mainly uses in nuclear research. It is a solid metal at room temperature and it has a melting point of 1527°c predicted, the boiling point is unknown.

Download Fermium as a printable and fully scalable image

Get the free download here (JPEG, PDF, SVG)

FAQ's

What is the Melting Point for Fermium?

Fermium has a Melting Point of 1527°F, meaning at 1527°F it will turn to a liquid.

What is the Boiling Point for Fermium?

Fermium has a Boiling Point of °F, meaning at °F it will turn to a Gas.

What is the Electronegativity of Fermium?

Fermium's Electronegativty is 1.3. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

What is the Heat of Vaporization of Fermium?

Fermium has a Heat of Vaporization of kJ/mol.

Uses

It has no significant commercial applications.

Sources

Produced by bombarding lighter transuranium elements with still lighter particles or by neutron capture.

100
Protons
100
Electrons
157
Neutrons

Fm

Element Symbol
Fm
Atomic Weight
257
Atomic Number
100
State
Solid
Melting Point
Unknown
1527
°C
Boiling Point
Unknown
°C
Heat of Vaporization
Unknown
kJ/mol
Crystal Structure
Unknown
Thermoconductivity
0.1
Unknown
W/cmK
Shells
2,8,18,32,30,8,2
Group
Actinide
Period
7
Block
F Block
Orbitals
[Rn] 5f12 7s2
Coefficient of Thermal Expansion
--
Covalent Radius
--
Density at 293K
--
Electrical Conductivity
--
First Ionization Potential
6.50 V
Second Ionization Potential
--
Third Ionization Potential
--
Ionic Radius
--
Oxydation States
3
Lattice Parameter
--
Lattice Parameter 2
--
Lattice Parameter 3
--
Pronounced

FER-mi-em

Discovered by

Argonne, Los Alamos, U of Calif

Discovery date

1953

Orbital configuration
2,8,18,32,30,8,2

Download the Periodic Table

Explore Other Actinides

227
89

Ac

Actinium
247
96

Cm

Curium
238.029
92

U

Uranium
259
102

No

Nobelium
247
97

Bk

Berkelium
244
94

Pu

Plutonium
232.038
90

Th

Thorium
262
103

Lr

Lawrencium
231.036
91

Pa

Protactinium
243
95

Am

Americium
237
93

Np

Neptunium
252
99

Es

Einsteinium
251
98

Cf

Californium
258
101

Md

Mendelevium
The actinide series contains 15 metallic elements from number 89 (actinium) to 103 (lawrencium). They are located in group 3 in the periodic table.
Previous

Einsteinium

99
Next

Mendelevium

101