Sc
Scandium is a Transition Metals element with the symbol Sc and atomic number 21. Located in period 4, group 3 (d-block), it has an atomic weight of 44.956 u and is classified as a solid at standard temperature and pressure. First identified in 1879 by Lars Fredrik Nilson in Sweden. Scandium has an electron configuration of [Ar] 3d¹ 4s² with 4 electron shells containing 2, 8, 9, 2 electrons respectively. It is commonly used in: aerospace alloys, stadium lights, sports equipment.
钪是一种过渡金属元素,符号为Sc,原子序数为21。位于第4周期,第3族(d区),原子量为44.956 u,在标准温度和压力下为固体。于1879 年首次被确认,由Lars Fredrik Nilson发现。钪的电子排布为[Ar] 3d¹ 4s²,具有4个电子层,分别含有2、8、9、2个电子。常见用途包括:航空航天合金,体育场灯光,运动器材。
Basic Properties基本属性
- Atomic Number原子序数
- 21
- Atomic Weight原子量
- 44.956 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
- 3
- Block区
- d-blockd区
Physical Properties物理性质
- Melting Point熔点
- +1541°C
- Boiling Point沸点
- +2836°C
- Density密度
- 2.99 g/cm³
- Crystal Structure晶体结构
- Hexagonal Close-Packed (HCP)六方密堆积
- Atomic Radius原子半径
- 184 pm
- Ionic Radius离子半径
- 75 pm
- Electronegativity电负性
- 1.36
Electron Configuration电子排布
- Config电子构型
- [Ar] 3d¹ 4s²
- Shells电子层
- 2, 8, 9, 2
- Oxidation States氧化态
- +3
Electron Shells电子层结构
Discovery发现历史
- Year年份
- 18791879 年
- Discoverer发现者
- Lars Fredrik Nilson
- Country国家
- Sweden瑞典
Uses & Applications用途
Aerospace alloys, stadium lights, sports equipment
航空航天合金,体育场灯光,运动器材
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 Scandium comes from Sc and it was first identified in 1879.
钪的名称来源于其符号Sc,于1879年首次被确认。
Memory Aid记忆口诀
Rare metal for high-end sports gear
高端运动器材合金
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)。