103
Lr
Lawrencium
Lawrencium
Lawrencium (Lr)
Actinides · Solid · Period 7 · Group 3
Advertisement
Element Properties
- Atomic Number
- 103
- Symbol
- Lr
- Atomic Mass
- 266.12
- Category
- Actinides
- Standard State
- Solid
- Period
- 7
- Group
- 3
- Electronegativity
- 1.3
- Atomic Radius
- —
- Ionization Energy
- —
- Electron Affinity
- —
- Oxidation States
- +3
- Melting Point
- 1900 K (1626.85 °C)
- Boiling Point
- —
- Density
- —
- Electron Configuration
- [Rn]7s2 5f14 6d1
- Year Discovered
- 1961
Frequently asked questions
What is the atomic number of Lawrencium?
The atomic number of Lawrencium is 103, which equals the number of protons in its nucleus.
What is the atomic mass of Lawrencium?
The atomic mass of Lawrencium is approximately 266.12 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Lawrencium?
The electron configuration of Lawrencium is [Rn]7s2 5f14 6d1.
Where is Lawrencium in the periodic table?
Lawrencium is located in period 7, group 3.
When was Lawrencium discovered?
Lawrencium was discovered in 1961.
Related elements
Same group
21
Sc
Scandium
44.956
39
Y
Yttrium
88.906
57
La
Lanthanum
138.905
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.908
60
Nd
Neodymium
144.24