Ce
Cerium is a Lanthanides element with the symbol Ce and atomic number 58. Located in period 6 (f-block), it has an atomic weight of 140.12 u and is classified as a solid at standard temperature and pressure. First identified in 1803 by Martin Heinrich Klaproth in Germany. Cerium has an electron configuration of [Xe] 4f¹ 5d¹ 6s² with 6 electron shells containing 2, 8, 18, 19, 9, 2 electrons respectively. It is commonly used in: catalytic converters, glass polishing, lighter flints.
铈是一种镧系元素元素，符号为Ce，原子序数为58。位于第6周期（f区），原子量为140.12 u，在标准温度和压力下为固体。于1803 年首次被确认，由Martin Heinrich Klaproth发现。铈的电子排布为[Xe] 4f¹ 5d¹ 6s²，具有6个电子层，分别含有2、8、18、19、9、2个电子。常见用途包括：催化转换器，玻璃抛光，打火机火石。
Basic Properties基本属性
- Atomic Number原子序数
- 58
- Atomic Weight原子量
- 140.12 u
- Category分类
- Lanthanides镧系元素
- State at STP标准状态
- Solid固体
- Period周期
- 6
- Group族
- —
- Block区
- f-blockf区
Physical Properties物理性质
- Melting Point熔点
- +798°C
- Boiling Point沸点
- +3443°C
- Density密度
- 6.69 g/cm³
- Crystal Structure晶体结构
- Face-Centered Cubic (FCC)面心立方
- Atomic Radius原子半径
- 182 pm
- Ionic Radius离子半径
- 87 pm
- Electronegativity电负性
- 1.12
Electron Configuration电子排布
- Config电子构型
- [Xe] 4f¹ 5d¹ 6s²
- Shells电子层
- 2, 8, 18, 19, 9, 2
- Oxidation States氧化态
- +3, +4
Electron Shells电子层结构
Discovery发现历史
- Year年份
- 18031803 年
- Discoverer发现者
- Martin Heinrich Klaproth
- Country国家
- Germany德国
Uses & Applications用途
Catalytic converters, glass polishing, lighter flints
催化转换器，玻璃抛光，打火机火石
Common Compounds常见化合物
—
—
Room Temperature常温特性
silvery white
银白色
Did You Know? 你知道吗？
The name Cerium comes from Ce and it was first identified in 1803.
铈的名称来源于其符号Ce，于1803年首次被确认。
Memory Aid记忆口诀
Most abundant rare earth element
最常见的稀土元素
Appearance外观
silvery white
银白色
Safety Information安全须知
- Handle with standard laboratory precautions. Refer to the Safety Data Sheet (SDS) for detailed handling instructions.
- 按照标准实验室预防措施处理。详细操作说明请参阅安全数据表（SDS）。