58 Ce 세륨 140.12 u

세륨

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주기
6
블록
f-블록
상 (표준 상태)
Solid

세륨은 가장 풍부한 희토류 원소이다. 촉매 변환기, 유리 연마, 자동 세척 오븐에 쓰인다.

세륨 개요

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.

물리적 성질

원자 질량 140.12 u
표준 상태에서의 상 Solid

전자적 성질

전기 음성도 1.12

전자 배치

배치 [Xe] 4f¹ 5d¹ 6s²

전자껍질 배치

세륨의 전자껍질 배치 Ce 2e⁻ 8e⁻ 18e⁻ 19e⁻ 9e⁻ 2e⁻
세륨의 전자껍질 구조 — 껍질별 전자 수.
껍질 전자
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 19
5 (O) 9
6 (P) 2

주기율표에서의 위치

주기율표에서 세륨의 위치 Ce

세륨을(를) 포함하는 화합물

Frequently Asked Questions

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