Ir
Iridium is a Transition Metals element with the symbol Ir and atomic number 77. Located in period 6, group 9 (d-block), it has an atomic weight of 192.22 u and is classified as a solid at standard temperature and pressure. First identified in 1803 by Smithson Tennant in England. Iridium has an electron configuration of [Xe] 4f¹⁴ 5d⁷ 6s² with 6 electron shells containing 2, 8, 18, 32, 15, 2 electrons respectively. It is commonly used in: spark plugs, crucibles, dinosaur extinction marker.
铱是一种过渡金属元素,符号为Ir,原子序数为77。位于第6周期,第9族(d区),原子量为192.22 u,在标准温度和压力下为固体。于1803 年首次被确认,由Smithson Tennant发现。铱的电子排布为[Xe] 4f¹⁴ 5d⁷ 6s²,具有6个电子层,分别含有2、8、18、32、15、2个电子。常见用途包括:火花塞,坩埚,恐龙灭绝标记。
Basic Properties基本属性
- Atomic Number原子序数
- 77
- Atomic Weight原子量
- 192.22 u
- Category分类
- Transition Metals过渡金属
- State at STP标准状态
- Solid固体
- Period周期
- 6
- Group族
- 9
- Block区
- d-blockd区
Physical Properties物理性质
- Melting Point熔点
- +2446°C
- Boiling Point沸点
- +4130°C
- Density密度
- 22.56 g/cm³
- Crystal Structure晶体结构
- Face-Centered Cubic (FCC)面心立方
- Atomic Radius原子半径
- 180 pm
- Ionic Radius离子半径
- 63 pm
- Electronegativity电负性
- 2.2
Electron Configuration电子排布
- Config电子构型
- [Xe] 4f¹⁴ 5d⁷ 6s²
- Shells电子层
- 2, 8, 18, 32, 15, 2
- Oxidation States氧化态
- +1, +2, +3, +4, +6
Electron Shells电子层结构
Discovery发现历史
- Year年份
- 18031803 年
- Discoverer发现者
- Smithson Tennant
- Country国家
- England英国
Uses & Applications用途
Spark plugs, crucibles, dinosaur extinction marker
火花塞,坩埚,恐龙灭绝标记
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 Iridium comes from Ir and it was first identified in 1803.
铱的名称来源于其符号Ir,于1803年首次被确认。
Memory Aid记忆口诀
Traces in the K-T boundary layer
恐龙灭绝的地质标记
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)。