58 Ce Cerium 140.12 u

Cerium

周期
6
族
—
ブロック
f-ブロック
相 (STP)
Solid

Cerium is the most abundant rare earth element. It is used in catalytic converters, glass polishing, and self-cleaning ovens.

About Cerium

The most abundant of the rare earth elements, cerium (Ce) is more common in Earth's crust than copper or tin. Element 58 belongs to the lanthanide series in period 6 of the f-block, with an atomic mass of 140.12, the electron configuration [Xe] 4f¹ 5d¹ 6s², and a Pauling electronegativity of 1.12. Its ready shift between the +3 and +4 oxidation states makes it a useful oxidation catalyst, notably in catalytic converters and the linings of self-cleaning ovens. Cerium oxide is also a premier polishing compound for glass and optics. The metal is soft, iron-gray, and solid at standard temperature and pressure.

物理的特性

原子質量 140.12 u
STPにおける相 Solid

電子的特性

電気陰性度 1.12

電子配置

配置 [Xe] 4f¹ 5d¹ 6s²

Electron Shell Configuration

Cerium electron shell configuration Ce 2e⁻ 8e⁻ 18e⁻ 19e⁻ 9e⁻ 2e⁻
Electron shell structure of Cerium — electrons per shell.
Shell Electrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 19
5 (O) 9
6 (P) 2

Position in Periodic Table

Cerium position in the periodic table Ce

ブロックと周期

ブロック

s p d f

周期

1 2 3 4 5 6 7

周期表

ランタノイド アクチノイド

Ce を含む反応

Cerium(IV) Reduction by Iron(II)

Ce⁴⁺ + Fe²⁺ → Ce³⁺ + Fe³⁺

Redox

Compounds Containing Cerium

Cerium(III) Chloride

CeCl₃

Cerium(IV) Oxide

CeO₂

ランタノイド をもっと見る

57 La Lanthanum 59 Pr Praseodymium 60 Nd Neodymium 61 Pm Promethium 62 Sm Samarium 63 Eu Europium 64 Gd Gadolinium 65 Tb Terbium 66 Dy Dysprosium 67 Ho Holmium

Frequently Asked Questions

What is Cerium?
Cerium (Ce) is a chemical element with atomic number 58. It is a solid at standard temperature and pressure, classified as a ランタノイド.
What are the key properties of Cerium?
Cerium has an atomic mass of 140.12 u.
What is the electron configuration of Cerium?
The electron configuration of Cerium is [Xe] 4f1 5d1 6s2. It is in the f-block of the periodic table.
What is the electronegativity of Cerium?
Cerium has an electronegativity of 1.12 on the Pauling scale.