Cf
Californium is a powerful neutron source used in nuclear reactor startup and cancer treatment.
የፊዚክስ ባህሪያት
| አቶሚክ | 251.07959 u |
| ብዛት | 15.1 g/cm³ |
| የቀለም አማራጭ | 1173.0 K |
| የሙቀት መጠኑ፦ | 1743.0 K |
| ቅርጽ | Silvery metallic |
| የክፍሉ ወቅት | ቀጥ ያለ |
የኬሚካል ባህሪያት
| ሴኮንዶች | 1.3 (ፒየር) |
| ፊደል ሠሌዳው፦ | 608.0 kJ/mol |
| ፊደል ሠሌዳው፦ | -97.31 kJ/mol |
| መተላለፊያ | +2, +3, +4 |
የፊደል ቅርጽ ምርጫዎች
| የኤሌክትሮን ማስተካከያ | [Rn] 5f10 7s2 |
| አቶሚክ | 169.0 pm |
| ቫን ዴር ዋልስ | 245.0 pm |
መከፈት
| የተገኘው በ | Stanley G. Thompson, Kenneth Street Jr., Albert Ghiorso, Glenn T. Seaborg |
| የምርምር ዓመት | 1950 |
| ቦታ | Berkeley, California, USA |
| ስም፦ (_N) | Named after California and the University of California |
ስለ Californium
Californium-252 spontaneously fissions, emitting useful neutrons. Only about 500 micrograms are produced annually in the US. It is one of the most expensive substances on Earth.
ፕሮግራሞች
Nuclear reactor startup, moisture gauges, oil well logging, and cancer treatment.
ሐቅ
Californium-252 costs around $27 million per gram, though only microgram quantities are typically needed.
ሴኮንዶች
| ብዛት | ብዛት | አራተኛ | ቋሚ |
| 249 | - | 351 years | አዎ |
| 251 | - | 898 years | አዎ |
| 252 | - | 2.645 years | አዎ |
የኤሌክትሮን ማስተካከያ
[Rn] 5f10 7s2