Sm
Samarium is used in powerful magnets and cancer treatment.
የፊዚክስ ባህሪያት
| አቶሚክ | 150.36 u |
| ብዛት | 7.52 g/cm³ |
| የቀለም አማራጭ | 1345.0 K |
| የሙቀት መጠኑ፦ | 2067.0 K |
| ቅርጽ | Silvery-white metallic |
| የክፍሉ ወቅት | ቀጥ ያለ |
የኬሚካል ባህሪያት
| ሴኮንዶች | 1.17 (ፒየር) |
| ፊደል ሠሌዳው፦ | 544.5 kJ/mol |
| ፊደል ሠሌዳው፦ | 15.6 kJ/mol |
| መተላለፊያ | +2, +3 |
የፊደል ቅርጽ ምርጫዎች
| የኤሌክትሮን ማስተካከያ | [Xe] 4f6 6s2 |
| አቶሚክ | 180.0 pm |
| ሬዲየስ | 198.0 pm |
| ቫን ዴር ዋልስ | 229.0 pm |
መከፈት
| የተገኘው በ | Lecoq de Boisbaudran |
| የምርምር ዓመት | 1879 |
| ቦታ | Paris, France |
| ስም፦ (_N) | Named after the mineral samarskite, after Russian official Vasili Samarsky-Bykhovets |
ስለ Samarium
Samarium is a moderately hard silvery metal that slowly oxidizes in air. Samarium-cobalt magnets were the first rare earth magnets and remain important for high-temperature applications.
ፕሮግራሞች
Samarium-cobalt magnets, cancer treatment (samarium-153), nuclear reactor control rods, and catalysts.
ሐቅ
Samarium-cobalt magnets operate at up to 700 degrees C, far exceeding neodymium magnets, making them essential for jet engines.
ሴኮንዶች
| ብዛት | ብዛት | አራተኛ | ቋሚ |
| 147 | 0.1499% | 1.06e11 years | አዎ |
| 149 | 0.1382% | - | አዎ |
| 150 | 0.0738% | - | አዎ |
| 152 | 0.2675% | - | አዎ |
የኤሌክትሮን ማስተካከያ
[Xe] 4f6 6s2