Cs
Cesium is the most electropositive stable element and defines the second in atomic clocks.
የፊዚክስ ባህሪያት
| አቶሚክ | 132.91 u |
| ብዛት | 1.873 g/cm³ |
| የቀለም አማራጭ | 301.59 K |
| የሙቀት መጠኑ፦ | 944.0 K |
| ቅርጽ | Silvery gold metallic |
| የክፍሉ ወቅት | ቀጥ ያለ |
የኬሚካል ባህሪያት
| ሴኮንዶች | 0.79 (ፒየር) |
| ፊደል ሠሌዳው፦ | 375.7 kJ/mol |
| ፊደል ሠሌዳው፦ | 45.5 kJ/mol |
| መተላለፊያ | +1 |
የፊደል ቅርጽ ምርጫዎች
| የኤሌክትሮን ማስተካከያ | [Xe] 6s1 |
| አቶሚክ | 265.0 pm |
| ሬዲየስ | 244.0 pm |
| ቫን ዴር ዋልስ | 343.0 pm |
መከፈት
| የተገኘው በ | Robert Bunsen, Gustav Kirchhoff |
| የምርምር ዓመት | 1860 |
| ቦታ | Heidelberg, Germany |
| ስም፦ (_N) | Latin 'caesius' meaning sky blue, from its spectral lines |
ስለ Cesium
Cesium is a soft, silvery-gold alkali metal with a melting point of 28.44 degrees C. It is extremely reactive and pyrophoric. Cesium-133 defines the second in the SI system.
ፕሮግራሞች
Atomic clocks, drilling fluids, photoelectric cells, and radiation therapy.
ሐቅ
The official definition of one second is exactly 9,192,631,770 oscillations of the cesium-133 atom.
ሴኮንዶች
| ብዛት | ብዛት | አራተኛ | ቋሚ |
| 133 | 1.0% | - | አዎ |
የኤሌክትሮን ማስተካከያ
[Xe] 6s1