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族
—
Block区
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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