21 Sc Scandium 44,956 u

Scandium

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Période
4
Groupe
3
Bloc
d-bloc
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.

Apparence: Silvery white

Propriétés physiques

Masse atomique 44.956 u
Densité 2.985 g/cm³
Point de fusion 1540.8 °C
Point d'ébullition 2835.8 °C
Phase à STP Solid
Rayon atomique 184.0 pm

Propriétés électroniques

Électronégativité 1.36
Énergie d'ionisation 633.1 eV
Affinité électronique 18.1 eV
Électrons de valence 3

Configuration électronique

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

Découverte

Découvert par: Lars Fredrik Nilson
Année: 1879

Tableau périodique

Lanthanides Actinides

Plus de Métal de Transition

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 métal de transition.
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.