Elements
103

Lr

Lawrencium

Pronounced

lor-ENS-i-em

Lawrencium (Lr) is a silvery-white colored radioactive metal that has the atomic number 103 in the periodic table. It is an Actinoid Metal with the symbol Lr.

Lawrencium is a synthetic element. It is named after Ernest Lawrence, the inventor of the cyclotron, a particle accelerator used to combine radioactive elements. Lawrencium is the final elements of the actinide series and it can only be produced in particle accelerators, it does not exist in nature. Much like Nobelium, Lawrencium’s discovery was claimed by many different groups. Lawrencium’s discovery was credited by IUPAC to the Lawrence Berkelely laboratory in 1971 but in 1992 it awarded joint discovery to the Dubna research group in Russia. It is a solid metal at room temperature and it has a melting point of 1627°c predicted, the boiling point is unknown.

Download Lawrencium as a printable and fully scalable image

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

FAQ's

What is the Melting Point for Lawrencium?

Lawrencium has a Melting Point of 1627°C, meaning at 1627°C it will turn to a liquid.

What is the Boiling Point for Lawrencium?

Lawrencium has a Boiling Point of °C, meaning at °C it will turn to a Gas.

What is the Electronegativity of Lawrencium?

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

Discovered by

A.Ghiorso, T.Sikkeland, A.E.Larsh, R.M.Latimer

Discovery date

1961

What is the Heat of Vaporization of Lawrencium?

Lawrencium has a Heat of Vaporization of kJ/mol.

Uses

It has no significant commercial applications.

Sources

Produced by bombarding californium with boron ions.

103
Protons
103
Electrons
159
Neutrons

Lr

Element Symbol
Lr
Atomic Weight
262
Atomic Number
103
State
Solid
Melting Point
Unknown
1627
°C
Boiling Point
Unknown
°C
Heat of Vaporization
Unknown
kJ/mol
Crystal Structure
Unknown
Thermoconductivity
0.1
Unknown
W/cmK
Shells
2,8,18,32,32,9,2
Group
Actinide
Period
7
Block
D Block
Orbitals
[Rn] 5f14 6d1 7s2
Coefficient of Thermal Expansion
--
Covalent Radius
--
Density at 293K
--
Electrical Conductivity
--
First Ionization Potential
--
Second Ionization Potential
--
Third Ionization Potential
--
Ionic Radius
--
Oxydation States
3
Lattice Parameter
--
Lattice Parameter 2
--
Lattice Parameter 3
--
Orbital configuration
2,8,18,32,32,9,2

Download the Periodic Table

The periodic table in multiple colors, each color represents a periodic group

Explore Other Actinides

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

Nobelium

102
Next

Rutherfordium

104