Mn
Manganese is a Transition Metals element with the symbol Mn and atomic number 25. Located in period 4, group 7 (d-block), it has an atomic weight of 54.938 u and is classified as a solid at standard temperature and pressure. First identified in 1774 by Johan Gottlieb Gahn in Sweden. Manganese has an electron configuration of [Ar] 3d⁵ 4s² with 4 electron shells containing 2, 8, 13, 2 electrons respectively. It is commonly used in: steel production, batteries, glass coloring, enzymes.
锰是一种过渡金属元素,符号为Mn,原子序数为25。位于第4周期,第7族(d区),原子量为54.938 u,在标准温度和压力下为固体。于1774 年首次被确认,由Johan Gottlieb Gahn发现。锰的电子排布为[Ar] 3d⁵ 4s²,具有4个电子层,分别含有2、8、13、2个电子。常见用途包括:钢铁生产,电池,玻璃着色,酶。
Basic Properties基本属性
- Atomic Number原子序数
- 25
- Atomic Weight原子量
- 54.938 u
- Category分类
- Transition Metals过渡金属
- State at STP标准状态
- Solid固体
- Period周期
- 4
- Group族
- 7
- Block区
- d-blockd区
Physical Properties物理性质
- Melting Point熔点
- +1246°C
- Boiling Point沸点
- +2061°C
- Density密度
- 7.43 g/cm³
- Crystal Structure晶体结构
- Body-Centered Cubic (BCC)体心立方
- Atomic Radius原子半径
- 161 pm
- Ionic Radius离子半径
- 67 pm
- Electronegativity电负性
- 1.55
Electron Configuration电子排布
- Config电子构型
- [Ar] 3d⁵ 4s²
- Shells电子层
- 2, 8, 13, 2
- Oxidation States氧化态
- +2, +4, +7
Electron Shells电子层结构
Discovery发现历史
- Year年份
- 17741774 年
- Discoverer发现者
- Johan Gottlieb Gahn
- Country国家
- Sweden瑞典
Uses & Applications用途
Steel production, batteries, glass coloring, enzymes
钢铁生产,电池,玻璃着色,酶
Common Compounds常见化合物
—
—
Room Temperature常温特性
silvery metallic
银色金属光泽
Did You Know? 你知道吗?
The name Manganese comes from Mn and it was first identified in 1774.
锰的名称来源于其符号Mn,于1774年首次被确认。
Memory Aid记忆口诀
Purple permanganate is a strong oxidizer
高锰酸钾紫红色
Appearance外观
silvery metallic
银色金属光泽
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)。