21 Sc Scandium 44.956 u

Scandium

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주기
4
3
블록
d-블록
상 (표준 상태)
Solid

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

외관: 은백색

물리적 성질

원자 질량 44.956 u
밀도 2.985 g/cm³
녹는점 1540.8 °C
끓는점 2835.8 °C
표준 상태에서의 상 Solid
원자 반지름 184.0 pm

전자적 성질

전기 음성도 1.36
이온화 에너지 633.1 eV
전자 친화도 18.1 eV
원자가 전자 3

전자 배치

배치 [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

발견

발견자: Lars Fredrik Nilson
연도: 1879

주기율표

란타넘족 악티늄족

더 많은 전이 금속

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 전이 금속.
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.