Lithium (Li) — Alkali metal. Atomic number 3.
Soft, silvery metal
- Atomic number: 3
- Symbol: Li
- Atomic mass: 6.94 u
- Category: Alkali metal
- State: Solid
- Melting point: 180.5 °C / 453.65 K
- Boiling point: 1341.85 °C / 1615 K
- Density: 0.534 g/cm³ (20°C)
- Electron configuration: [He] 2s1
- Oxidation states: +1
- Electronegativity: 0.98
- Discovered by: Johan August Arfvedson (1817)
Common uses: Rechargeable batteries, Lightweight alloys, Glass ceramics, Lubricants, Mood-stabilizing medicines
Biological role: No known essential biological role. Toxic except in very small controlled doses.
Frequently Asked Questions about Lithium
What is the atomic number of lithium?
Lithium has an atomic number of 3, meaning each atom contains 3 protons in its nucleus.
What is the atomic mass of lithium?
The standard atomic weight of lithium is 6.94 u (unified atomic mass units).
What category does lithium belong to?
Lithium is classified as a alkali metal.
What is the state of lithium at room temperature?
Lithium is a solid at 20 °C (68 °F).
What is the melting point of lithium?
The melting point of lithium is 180.5 °C / 453.65 K.
What is the boiling point of lithium?
The boiling point of lithium is 1341.85 °C / 1615 K.
What is the density of lithium?
The density of lithium is 0.534 g/cm³ (20°C).
What is the electronegativity of lithium?
Lithium has a Pauling electronegativity of 0.98.
What is the electron configuration of lithium?
The electron configuration of lithium is [He] 2s1.
What are the common oxidation states of lithium?
Lithium commonly exhibits the following oxidation states: +1.
When was lithium discovered?
Lithium was discovered in 1817 by Johan August Arfvedson.
Is lithium radioactive?
Lithium is a stable element with no naturally occurring radioactive isotopes.
What is the biological role of lithium?
No known essential biological role. Toxic except in very small controlled doses.
What are the common uses of lithium?
Lithium is used for: Rechargeable batteries; Lightweight alloys; Glass ceramics; Lubricants; Mood-stabilizing medicines.
