Number of strokes: 12.
Radical: priest
Structure: left and right structure
Explanation: A radioactive element, element symbol Cf, was discovered by bombarding curium -242 with alpha particles. The available californium is very small, which limits its application. However, as a source of fractured fragments, it is used in nuclear research.
Properties of californium
The melting point is 900℃. Metal californium is volatile and can be distilled at1100 ~1200℃. The chemical properties are active, similar to other actinides with valence of +3. There are water-soluble nitrates, sulfates, chlorides and perchlorates; Its fluoride, oxalate and hydroxide precipitate in aqueous solution.
By using various combinations of rake isotopes and bombardment particles, several californium isotopes have been found: 246Cf, 249Cf, 25 1Cf, 252Cf, 254Cf, etc. The half-life of 25 1Cf is 900 years; The half-life of 249Cf is 360 years; The half-life of 252Cf is 2.64 years; The half-life of 254Cf is 64 days.