21 Sc Scandium 44.956 u

Scandium

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周期
4
3
区块
d-区块
相态 (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.

外观: 银白色金属

物理属性

原子质量 44.956 u
密度 2.985 g/cm³
熔点 1540.8 °C
沸点 2835.8 °C
STP相态 Solid
原子半径 184.0 pm

电子属性

电负性 1.36
电离能 633.1 eV
电子亲和能 18.1 eV
价电子 3

电子构型

构型 [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

发现

发现者: Lars Fredrik Nilson
年份: 1879

元素周期表

镧系元素 锕系元素

更多过渡金属

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 过渡金属.
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.