Scandium (Sc) — Transition metal. Atomic number 21.
Silvery-white metal
- Atomic number: 21
- Symbol: Sc
- Atomic mass: 44.956 u
- Category: Transition metal
- State: Solid
- Melting point: 1540.85 °C / 1814 K
- Boiling point: 2835.85 °C / 3109 K
- Density: 2.99 g/cm³ (20°C)
- Electron configuration: [Ar] 3d1 4s2
- Oxidation states: +3
- Electronegativity: 1.36
- Discovered by: Lars Fredrik Nilson (1879)
Common uses: Aerospace alloys, High-intensity lamps, Sports equipment
Biological role: No known biological role.
Frequently Asked Questions about Scandium
What is the atomic number of scandium?
Scandium has an atomic number of 21, meaning each atom contains 21 protons in its nucleus.
What is the atomic mass of scandium?
The standard atomic weight of scandium is 44.956 u (unified atomic mass units).
What category does scandium belong to?
Scandium is classified as a transition metal.
What is the state of scandium at room temperature?
Scandium is a solid at 20 °C (68 °F).
What is the melting point of scandium?
The melting point of scandium is 1540.85 °C / 1814 K.
What is the boiling point of scandium?
The boiling point of scandium is 2835.85 °C / 3109 K.
What is the density of scandium?
The density of scandium is 2.99 g/cm³ (20°C).
What is the electronegativity of scandium?
Scandium has a Pauling electronegativity of 1.36.
What is the electron configuration of scandium?
The electron configuration of scandium is [Ar] 3d1 4s2.
What are the common oxidation states of scandium?
Scandium commonly exhibits the following oxidation states: +3.
When was scandium discovered?
Scandium was discovered in 1879 by Lars Fredrik Nilson.
Is scandium radioactive?
Scandium is a stable element with no naturally occurring radioactive isotopes.
What is the biological role of scandium?
No known biological role.
What are the common uses of scandium?
Scandium is used for: Aerospace alloys; High-intensity lamps; Sports equipment.
