Lawrencium (Lr): Properties, Uses and Facts in 3D
Lawrencium is element 103 on the periodic table, an actinide, so it is a metal. At room temperature it is expected to be a solid (too few atoms have ever been made to check). Open it in the 3D Periodic Table to spin its tile, see its electron shells and read its story.
Explore in 3DLawrencium quick facts
| Atomic number | 103 |
|---|---|
| Symbol | Lr |
| Atomic mass | 266 |
| Category | Actinide |
| Series and period | Actinides, period 7 |
| Block | f-block |
| State at room temperature | Solid (expected) |
| Electron configuration | [Rn] 5f¹⁴ 6d¹ 7s² |
| Electrons per shell | 2, 8, 18, 32, 32, 8, 3 |
| Discovered | 1961, Ghiorso |
What is lawrencium used for?
- Scientific research only
- Nuclear structure studies
- No practical applications
Interesting facts about lawrencium
- Named after Ernest Lawrence. Inventor of the cyclotron accelerator
- Conventionally the last actinide, closing the f-block row
- Lawrencium was first made by bombarding californium with boron ions
Lawrencium was discovered in 1961 by Ghiorso in the United States.
Where lawrencium sits on the periodic table
Lawrencium is in the actinide series (period 7). Tap any element to open its page.
Other actinides
Lawrencium questions
What is the atomic number of lawrencium?
Lawrencium has atomic number 103, so every lawrencium atom has 103 protons in its nucleus. Its symbol is Lr and its atomic mass is 266.
Is lawrencium a metal?
Lawrencium is a metal. On the periodic table it is grouped as an actinide, found in the actinide series (period 7).
What is the electron configuration of lawrencium?
The electron configuration of lawrencium is [Rn] 5f¹⁴ 6d¹ 7s². Its electrons sit in 7 shells: 2, 8, 18, 32, 32, 8, 3.
What is lawrencium used for?
Lawrencium is used for scientific research only, nuclear structure studies and no practical applications.
Who discovered lawrencium?
Lawrencium was discovered in 1961 by Ghiorso in the United States.
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