Samarium is a Lanthanides element with the symbol Sm and atomic number 62. Located in period 6 (f-block), it has an atomic weight of 150.36 u and is classified as a solid at standard temperature and pressure. First identified in 1879 by Paul-Emile Lecoq de Boisbaudran in France. Samarium has an electron configuration of [Xe] 4f⁶ 6s² with 6 electron shells containing 2, 8, 18, 24, 8, 2 electrons respectively. It is commonly used in: magnets, nuclear reactors, lasers.

钐是一种镧系元素元素,符号为Sm,原子序数为62。位于第6周期(f区),原子量为150.36 u,在标准温度和压力下为固体。于1879 年首次被确认,由Paul-Emile Lecoq de Boisbaudran发现。钐的电子排布为[Xe] 4f⁶ 6s²,具有6个电子层,分别含有2、8、18、24、8、2个电子。常见用途包括:磁铁,核反应堆,激光。

Basic Properties基本属性

Atomic Number原子序数
62
Atomic Weight原子量
150.36 u
Category分类
Lanthanides镧系元素
State at STP标准状态
Solid固体
Period周期
6
Group
Block
f-blockf区

Physical Properties物理性质

Melting Point熔点
+1074°C
Boiling Point沸点
+1794°C
Density密度
7.52 g/cm³
Crystal Structure晶体结构
Rhombohedral菱方晶系
Atomic Radius原子半径
180 pm
Ionic Radius离子半径
96 pm
Electronegativity电负性
1.17

Electron Configuration电子排布

Config电子构型
[Xe] 4f⁶ 6s²
Shells电子层
2, 8, 18, 24, 8, 2
Oxidation States氧化态
+2, +3

Electron Shells电子层结构

2e⁻
8e⁻
18e⁻
24e⁻
8e⁻
2e⁻

Discovery发现历史

Year年份
18791879 年
Discoverer发现者
Paul-Emile Lecoq de Boisbaudran
Country国家
France法国

Uses & Applications用途

Magnets, nuclear reactors, lasers

磁铁,核反应堆,激光

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 Samarium comes from Sm and it was first identified in 1879.

钐的名称来源于其符号Sm,于1879年首次被确认。

Memory Aid记忆口诀

Samarium-cobalt magnets

耐高温磁体

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)。
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