Y
Yttrium is a Transition Metals element with the symbol Y and atomic number 39. Located in period 5, group 3 (d-block), it has an atomic weight of 88.906 u and is classified as a solid at standard temperature and pressure. First identified in 1794 by Johan Gadolin in Finland. Yttrium has an electron configuration of [Kr] 4d¹ 5s² with 5 electron shells containing 2, 8, 18, 9, 2 electrons respectively. It is commonly used in: led phosphors, lasers, superconductors, ceramics.
钇是一种过渡金属元素,符号为Y,原子序数为39。位于第5周期,第3族(d区),原子量为88.906 u,在标准温度和压力下为固体。于1794 年首次被确认,由Johan Gadolin发现。钇的电子排布为[Kr] 4d¹ 5s²,具有5个电子层,分别含有2、8、18、9、2个电子。常见用途包括:LED荧光粉,激光,超导体,陶瓷。
Basic Properties基本属性
- Atomic Number原子序数
- 39
- Atomic Weight原子量
- 88.906 u
- Category分类
- Transition Metals过渡金属
- State at STP标准状态
- Solid固体
- Period周期
- 5
- Group族
- 3
- Block区
- d-blockd区
Physical Properties物理性质
- Melting Point熔点
- +1522°C
- Boiling Point沸点
- +3345°C
- Density密度
- 4.47 g/cm³
- Crystal Structure晶体结构
- Hexagonal Close-Packed (HCP)六方密堆积
- Atomic Radius原子半径
- 212 pm
- Ionic Radius离子半径
- 90 pm
- Electronegativity电负性
- 1.22
Electron Configuration电子排布
- Config电子构型
- [Kr] 4d¹ 5s²
- Shells电子层
- 2, 8, 18, 9, 2
- Oxidation States氧化态
- +3
Electron Shells电子层结构
Discovery发现历史
- Year年份
- 17941794 年
- Discoverer发现者
- Johan Gadolin
- Country国家
- Finland芬兰
Uses & Applications用途
LED phosphors, lasers, superconductors, ceramics
LED荧光粉,激光,超导体,陶瓷
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 Yttrium comes from Y and it was first identified in 1794.
钇的名称来源于其符号Y,于1794年首次被确认。
Memory Aid记忆口诀
Red phosphor in old TV screens
老电视红色荧光粉
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)。