21 Sc Scandium 44.956 u

Scandium

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Period
4
Group
3
Block
d-block
Phase (STP)
Solid

Scandium is a soft, silvery transition metal used in aerospace alloys. It is relatively rare and was predicted by Mendeleev before its discovery.

Appearance: Silvery white

Physical Properties

Atomic Mass 44.956 u
Density 2.985 g/cm³
Melting Point 1540.8 °C
Boiling Point 2835.8 °C
Phase at STP Solid
Atomic Radius 184.0 pm

Electronic Properties

Electronegativity 1.36
Ionization Energy 633.1 eV
Electron Affinity 18.1 eV
Valence Electrons 3

Electron Configuration

Configuration [Ar] 3d¹ 4s²

Electron Shell Configuration

Scandium electron shell configuration Sc 2e⁻ 8e⁻ 9e⁻ 2e⁻

Position in Periodic Table

Scandium position in the periodic table Sc

Discovery

Discovered by: Lars Fredrik Nilson
Year: 1879

Block & Period

Block

s p d f

Period

1 2 3 4 5 6 7

Periodic Table

Lanthanides Actinides

More Transition Metal

22 Ti Titanium 23 V Vanadium 24 Cr Chromium 25 Mn Manganese 26 Fe Iron 27 Co Cobalt 28 Ni Nickel 29 Cu Copper 30 Zn Zinc 39 Y Yttrium

Frequently Asked Questions

What is Scandium?
Scandium (Sc) is a chemical element with atomic number 21. It is a solid at standard temperature and pressure, classified as a transition metal.
What are the key properties of Scandium?
Scandium has an atomic mass of 44.956 u, density of 2.985 g/cm³, melting point of 1540.8°C, boiling point of 2835.8°C.
What is the electron configuration of Scandium?
The electron configuration of Scandium is [Ar] 3d1 4s2. It is in the d-block of the periodic table.
Who discovered Scandium?
Scandium was discovered by Lars Fredrik Nilson in 1879.
What is the electronegativity of Scandium?
Scandium has an electronegativity of 1.36 on the Pauling scale.