Eu
Europium is a Lanthanides element with the symbol Eu and atomic number 63. Located in period 6 (f-block), it has an atomic weight of 151.96 u and is classified as a solid at standard temperature and pressure. First identified in 1901 by Eugene-Anatole Demarcay in France. Europium has an electron configuration of [Xe] 4f⁷ 6s² with 6 electron shells containing 2, 8, 18, 25, 8, 2 electrons respectively. It is commonly used in: red phosphor in tv/display screens, anti-counterfeiting.
铕是一种镧系元素元素，符号为Eu，原子序数为63。位于第6周期（f区），原子量为151.96 u，在标准温度和压力下为固体。于1901 年首次被确认，由Eugene-Anatole Demarcay发现。铕的电子排布为[Xe] 4f⁷ 6s²，具有6个电子层，分别含有2、8、18、25、8、2个电子。常见用途包括：电视/显示器红色荧光粉，防伪。
Basic Properties基本属性
- Atomic Number原子序数
- 63
- Atomic Weight原子量
- 151.96 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
- +822°C
- Boiling Point沸点
- +1529°C
- Density密度
- 5.24 g/cm³
- Crystal Structure晶体结构
- Body-Centered Cubic (BCC)体心立方
- Atomic Radius原子半径
- 180 pm
- Ionic Radius离子半径
- 95 pm
- Electronegativity电负性
- 1.2
Electron Configuration电子排布
- Config电子构型
- [Xe] 4f⁷ 6s²
- Shells电子层
- 2, 8, 18, 25, 8, 2
- Oxidation States氧化态
- +2, +3
Electron Shells电子层结构
Discovery发现历史
- Year年份
- 19011901 年
- Discoverer发现者
- Eugene-Anatole Demarcay
- Country国家
- France法国
Uses & Applications用途
Red phosphor in TV/display screens, anti-counterfeiting
电视/显示器红色荧光粉，防伪
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 Europium comes from Eu and it was first identified in 1901.
铕的名称来源于其符号Eu，于1901年首次被确认。
Memory Aid记忆口诀
The red in old TV screens
显示屏红色荧光粉
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）。