21
Sc
44.956
Scandium (Sc)
Element 21 · Period 4 · Group 3
transition-metal
solid at room temp
d-block
About Scandium
Rare transition metal used in aerospace alloys and sports equipment.
Physical Properties
Atomic Mass
44.956 u
State at 25°C
Solid
Melting Point
1541 °C
Boiling Point
2830 °C
Density
2.985 g/cm³
Magnetism
Paramagnetic
Atomic Properties
Electron Configuration
[Ar] 3d¹ 4s²
Electron Shells
2, 8, 9, 2
Electronegativity
1.36
Atomic Radius
184 pm
Ionization Energy
633 kJ/mol
Oxidation States
+3
Discovery & History
Discovered By
Lars Fredrik Nilson
Discovery Year
1879
Named By
Lars Fredrik Nilson
Name origin: Latin: Scandia (Scandinavia)
Frequently Asked Questions
- Is Scandium a metal, nonmetal, or metalloid?
- Scandium is classified as a transition-metal.
- What state is Scandium in at room temperature?
- Scandium is a solid at standard room temperature (25°C).
- What is the atomic mass of Scandium?
- Scandium has an atomic mass of 44.956 atomic mass units (u).
- Who discovered Scandium?
- Scandium was discovered by Lars Fredrik Nilson in 1879.
- Where is Scandium on the periodic table?
- Scandium is element number 21, located in period 4 and group 3.