Teacher:In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Teacher: Now, understand the problem? Solve this instance: The Nozicki-Hiyama-Kishi reaction uses organometallic compounds featuring chromium or this element. It can be extracted from its oxide ore through heating in the presence of a mixture of hydrogen gas and carbon monoxide to yield a tetracarbonyl intermediate, which decomposes to yield four carbon monoxides in a process named for Mond. The diffraction pattern resulting from x rays fired at a crystal of this element provided evidence for the wave-particle duality in the Davisson-Germer experiment. A catalyst used to hydrogenate alkenes contains this element and aluminum, and is named for Raney. For 10 points, name this element with atomic symbol Ni.
Student:
Science