71Lu174.97
Lutetium
Lanthanide · element 71 · f-block (shown below the main table)
Quick facts
| Symbol | Lu |
|---|---|
| Atomic number | 71 |
| Relative atomic mass | 174.97 |
| Category | Lanthanide |
| Position | f-block (shown below the main table) |
| State at 20 °C | Solid |
| Melting point | 1,652 °C |
| Boiling point | 3,402 °C |
| Density | 9.84 g/cm³ |
| Electronegativity | 1.27 |
| Electron configuration | [Xe] 4f14 5d1 6s2 |
About Lutetium
Lutetium has the symbol Lu and atomic number 71, which means every lutetium atom has 71 protons in its nucleus and, in a neutral atom, 71 electrons. At room temperature it is a solid.
Lanthanides are the first row of the f-block. Many are used in strong magnets, screens and lasers.
It melts at 1,652 °C and boils at 3,402 °C.
Explore it
See where lutetium sits, and drag the temperature slider to watch it melt and boil, on the interactive periodic table. Practise with quizzes on OmniEx.