Tossup

A powder of this element reduces iron oxide in exothermic welding due to its high affinity (10[1])for oxygen. A catalyst of this (-5[1])element alloyed with nickel is activated with sodium hydroxide and is named for Murray Raney. This element is produced (-5[1])by dissolving a precursor (-5[1])in cryolite and electrolyzing the molten salt bath. This element is the third most abundant in the Earth’s crust after oxygen and silicon. This element (-5[1])is produced in the (-5[1])Hall–Héroult (“hall-ay-ROO”) process from its oxide, which is isolated in the Bayer (0[1]-5[1])process for refining bauxite (“BOX-ite”). For 10 points, name this ultralight metal used to make soda cans (10[1])and foil. ■END■ (10[5])

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