Californium is a radioactive metallic chemical element with symbol Cf. The element was first made in 1950 at the University of California Radiation Laboratory in Berkeley, and it has the second-highest atomic mass of all the elements that have been produced in amounts large enough to see with the unaided eye. It was named after the university and the state of California.

Californium is sold for about $27 million per gram and only about 8 grams of it have been made in the western world since its discovery by Seaborg in 1950.

Arguably the most valuable natural resource on earth is the element californium. In its most common seen form, the isotope californium-252, the half-life is less than three years(about 2.6 years); scientists who wish to use this element have very little time to work with very little californium.

Californium is used in the medical field as a cancer treatment, and it is also great at starting reaction processes for nuclear reactors. This exciting element can as well be used as a neutron source to identify gold and silver ores through a technique known as neutron activation. It is also being used in devices known as neutron moisture gauges that are used to find water and oil bearing layers in oil wells. The californium used in practical applications is manmade, but it does occur naturally in trace amounts.
Source: http://www.morelight.ml/2016/02/is-californium-most-valuable-natural.html?m=1

Can it b used to kill boko haram?

They probably own it as it’s in abundant in Borno.

Thats why fight will not end in Borno

Hahahaha naija na cruize oo