Aluminum (Al) — Post-transition metal. Atomic number 13.
Silvery-white lightweight metal
- Atomic number: 13
- Symbol: Al
- Atomic mass: 26.982 u
- Category: Post-transition metal
- State: Solid
- Melting point: 660.32 °C / 933.47 K
- Boiling point: 2518.85 °C / 2792 K
- Density: 2.7 g/cm³ (20°C)
- Electron configuration: [Ne] 3s2 3p1
- Oxidation states: +3
- Electronegativity: 1.61
- Discovered by: Hans Christian Ørsted (1825)
Common uses: Aircraft, Packaging, Construction, Electronics
Biological role: No known essential biological role.
Frequently Asked Questions about Aluminum
What is the atomic number of aluminum?
Aluminum has an atomic number of 13, meaning each atom contains 13 protons in its nucleus.
What is the atomic mass of aluminum?
The standard atomic weight of aluminum is 26.982 u (unified atomic mass units).
What category does aluminum belong to?
Aluminum is classified as a post-transition metal.
What is the state of aluminum at room temperature?
Aluminum is a solid at 20 °C (68 °F).
What is the melting point of aluminum?
The melting point of aluminum is 660.32 °C / 933.47 K.
What is the boiling point of aluminum?
The boiling point of aluminum is 2518.85 °C / 2792 K.
What is the density of aluminum?
The density of aluminum is 2.7 g/cm³ (20°C).
What is the electronegativity of aluminum?
Aluminum has a Pauling electronegativity of 1.61.
What is the electron configuration of aluminum?
The electron configuration of aluminum is [Ne] 3s2 3p1.
What are the common oxidation states of aluminum?
Aluminum commonly exhibits the following oxidation states: +3.
When was aluminum discovered?
Aluminum was discovered in 1825 by Hans Christian Ørsted.
Is aluminum radioactive?
Aluminum is a stable element with no naturally occurring radioactive isotopes.
What is the biological role of aluminum?
No known essential biological role.
What are the common uses of aluminum?
Aluminum is used for: Aircraft; Packaging; Construction; Electronics.
