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As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium. It is followed by caesium, iridium ... Californium-252: 15.1: 0: 60.0 ...
Californium is a rare element that is man-made and not found in nature. As the name suggests, the element was first created in the University of California’s Radiation Lab in Berkeley.
Californium is a silvery-white actinide metal [12] with a melting point of 900 ± 30 °C (1,650 ± 50 °F) and an estimated boiling point of 1,743 K (1,470 °C; 2,680 °F). [13] The pure metal is malleable and is easily cut with a knife. Californium metal starts to vaporize above 300 °C (570 °F) when exposed to a vacuum. [14]
1.3–1.6 ka 240 Pu 229 Th 246 Cm ƒ: 243 Am ƒ: 4.7–7.4 ka 245 Cm ƒ: 250 Cm 8.3–8.5 ka 239 Pu ƒ: 24.1 ka 230 Th № 231 Pa № 32–76 ka 236 Np ƒ: 233 U ƒ: 234 U № 150–250 ka: 99 Tc ₡ 126 Sn 248 Cm 242 Pu 327–375 ka: 79 Se ₡ 1.33 Ma: 135 Cs ₡ 237 Np ƒ: 1.61–6.5 Ma: 93 Zr 107 Pd 236 U 247 Cm ƒ: 15–24 Ma: 129 I ₡ 244 ...
Someone just paid a pretty penny for two rare 1-cent coins. And by a pretty penny, we mean a grand total of nearly $870,000. A 1792 silver center cent sold for $352,500 at a Heritage auction in ...
Californium-252 production diagram. Californium-252 (Cf-252, 252 Cf) undergoes spontaneous fission with a branching ratio of 3.09% and is used in small neutron sources. Fission neutrons have an energy range of 0 to 13 MeV with a mean value of 2.3 MeV and a most probable value of 1 MeV. [11]
Some things are less expensive, like ice cream. So how much did staples such as gas, groceries, appliances and cars cost 50 years ago? ... Milk: 89 cents a gallon, or $6.25 in today’s dollars ...
Few compounds of californium have been made and studied. [1] The only californium ion that is stable in aqueous solutions is the californium(III) cation. [2] The other two oxidation states are IV (strong oxidizing agents) and II (strong reducing agents). [3]