Here you can read more about the chemical element Californium. Its shemical symbol is Cf and its atomic number is 98. The relative atomic mass of Californium is 251 u. The elemental classification of Californium is Actinides, and it belongs to group 3 and period 7 in the Periodic Table of Elements.
The density of Californium is 15100 kg/m3. Californium was discovered in the year 1950 by Lawrence Berkeley National Laboratory.
To the right (or below if you are using a mobile device with a smaller screen) you will find the information given above for the element Californium ordered in tabular form, which might be easier to read and use if you want to quantify it in some sort.