The primary ore of this metal is pentlandite and the radioactive decay of this metal (*) to cobalt-56 forms the characteristic light curves of type Ia ("one a") supernovae.
A finely divided form of this element is used as a catalyst in the hydrogenation of ethene. In the Oxford process, coal and sodium sulfate are used in this element's refinement. The primary ore of this metal is pentlandite and the radioactive decay of this metal (*) to cobalt-56 forms the characteristic light curves of type Ia ("one a") supernovae. In the Davisson-Germer experiment, electrons were fired at a crystal of this element, which is purified through the Mond process. For 10 points, name this transition metal with atomic number 28 and symbol Ni.
A finely divided form of this element is used as a catalyst in the hydrogenation of ethene.
nickel [accept Ni before mentioned] &lt;AP&gt;