Cd
Cadmium is a toxic heavy metal formerly used widely in batteries and pigments.
Physical Properties
| পদাৰ্থ | 112.41 u |
| ঘনত্ব | 8.69 g/cm³ |
| Melting Point | 594.22 K |
| উত্তাপৰ বিন্দু | 1040.0 K |
| আকৃতি | Silvery bluish-gray metallic |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 1.69 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 867.8 kJ/mol |
| ইলেকট্ৰন | -68.0 kJ/mol |
| Oxidation States | +1, +2 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Kr] 4d10 5s2 |
| পৰমাণু | 151.0 pm |
| কোভালেন্ট বেৰিয়াড | 144.0 pm |
| Van der Waals Radius | 158.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Friedrich Stromeyer, Karl Samuel Leberecht Hermann |
| আবিষ্কাৰৰ বছৰ | 1817 |
| অৱস্থান | Gottingen, Germany |
| Named After | Latin 'cadmia' or Greek 'kadmeia' meaning calamine |
বিষয়ে Cadmium
Cadmium is a soft, bluish-white metal that is toxic and classified as a carcinogen. It was widely used in NiCd batteries but its use has declined due to environmental concerns.
Uses & Applications
NiCd batteries, pigments, electroplating, nuclear reactor control rods, and solar cells.
মজা কথা
Cadmium pigments remain popular with artists because no other pigments match their brilliance, despite cadmium's toxicity.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 110 | 0.1249% | - | Yes |
| 111 | 0.128% | - | Yes |
| 112 | 0.2413% | - | Yes |
| 114 | 0.2873% | - | Yes |
ইলেকট্ৰন
[Kr] 4d10 5s2