3
Li
6.941
Lithium (Li)
Element 3 · Period 2 · Group 1
alkali-metal
solid at room temp
s-block
About Lithium
Lightest metal. Used in batteries, psychiatric medicine, and nuclear applications.
Physical Properties
Atomic Mass
6.941 u
State at 25°C
Solid
Melting Point
180.54 °C
Boiling Point
1342 °C
Density
0.534 g/cm³
Magnetism
Diamagnetic
Atomic Properties
Electron Configuration
[He] 2s¹
Electron Shells
2, 1
Electronegativity
0.98
Atomic Radius
167 pm
Ionization Energy
520 kJ/mol
Oxidation States
+1
Discovery & History
Discovered By
Johan August Arfwedson
Discovery Year
1817
Named By
Johan August Arfwedson
Name origin: Greek: lithos (stone)
Frequently Asked Questions
- Is Lithium a metal, nonmetal, or metalloid?
- Lithium is classified as a alkali-metal.
- What state is Lithium in at room temperature?
- Lithium is a solid at standard room temperature (25°C).
- What is the atomic mass of Lithium?
- Lithium has an atomic mass of 6.941 atomic mass units (u).
- Who discovered Lithium?
- Lithium was discovered by Johan August Arfwedson in 1817.
- Where is Lithium on the periodic table?
- Lithium is element number 3, located in period 2 and group 1.