Bk
Berkelium
Element 97 · 247.07031 u
Berkelium is produced in tiny amounts to serve as target material for making heavier elements.
Fisiese eienskappe
| Atomic Mass | 247.07031 u |
| Density | 14.79 g/cm³ |
| Smelt punt: | 1259.0 K |
| Boiling Point | 2900.0 K |
| Appearance | Silvery metallic |
| Toestand by kamerkomp | Solied |
Chemical Properties
| Electronegativity | 1.3 (TrinidadCity name (optional, probably does not need a translation)) |
| 1st Ionization Energy | 601.0 kJ/mol |
| Electron Affinity | -165.24 kJ/mol |
| Oxidation States | +3, +4 |
Atomic Properties
| Electron Configuration | [Rn] 5f9 7s2 |
| Atomic Radius | 170.0 pm |
| Atomic radius: | 244.0 pm |
Discovery
| Discovered By | Stanley G. Thompson, Albert Ghiorso, Glenn T. Seaborg |
| Discovery Year | 1949 |
| Location | Berkeley, California, USA |
| Genoemde Na | Named after Berkeley, California |
About Berkelium
Berkelium is a soft, silvery-white radioactive actinide. It was used as target material to produce element 117 (tennessine).
Gebruiks & Programme
Target material for producing heavier elements and scientific research.
Fun Fact
In 2009, scientists produced 22 milligrams of berkelium-249 over 250 days to create element 117.
Isotopes
| Definieer Molekulêr Gewigte | Abundance | Half-Life | Stabiel |
| 247 | - | 1,380 years | Nee |
| 249 | - | 330 days | Nee |
Electron Configuration
[Rn] 5f9 7s2