cadmium
chemical element with symbol Cd and atomic number of 48
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Summary
cadmium is a chemical element[1]. cadmium draws 7,999 Wikipedia views per month (chemical element category, ranking #54 of 144).[2]
Key Facts
- Discoverer or inventor: Friedrich Stromeyer[3], Karl Samuel Leberecht Hermann[4]
- Instance of: chalcophile element[5]
- Named after: Cadmus[6]
- Made from material: greenockite[7], fly ash[8], zinc ore[9]
- Canonical SMILES: [Cd][10]
- Element symbol: Cd[11]
- Chemical formula: Cd[12]
- Subclass of: post-transition metal[13], heavy metal[14], d-block[15]
- Part of: period 5[16], group 12[17], transition metal[18]
- Has use: nickel–cadmium battery[19], Silver-cadmium battery[20], electroplating[21], nuclear poison[22], quantum dot display[23], pigment[24], photodetector[25], solar cell[26], helium–cadmium laser[27]
- Commons category: Cadmium[28]
- Unicode character: 鎘[29]
- Crystal system: hexagonal crystal system[30]
- Time of discovery or invention: 1817[31]
- Point group: dihexagonal-dipyramidal[32]
- Space group: space group P6₃/mmc[33]
- Found in taxon: Tedania charcoti[34]
- IPA transcription: ˈkædmiəm[35]
- Topic's main category: Category:Cadmium[36]
- Commons gallery: Cadmium[37]
- Atomic number: 48[38]
- Mohs' hardness: 2.0[39]
- Electronegativity: 1.69[40]
- Oxidation state: -2[41], 1[42], 2[43]
- Described by source: Brockhaus and Efron Encyclopedic Dictionary[44], Small Brockhaus and Efron Encyclopedic Dictionary[45]
Body
Influence
Things named for cadmium include cadmium yellow[46], a color[47]; cadmoindite[48], a mineral species[49]; and cadmoselite[50], a mineral species[51].
Why It Matters
cadmium has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[52] cadmium is known by 61 alternative names across languages and contexts.[53]
Entities named for cadmium include cadmium yellow[46], a color[47]; cadmoindite[48], a mineral species[49]; and cadmoselite[50], a mineral species[51].