Though it is not chlorine, one compound with element is used in a reaction that couples ketone or aldehyde groups into alkenes, the McMurry reaction. One mineral containing it, rutile, is responsible for asterisms in gems. Its namesake sponge is purified by leaching in the Kroll process, which replaced the Hunter process. This element's nitride is notable for its hardness equivalent to sapphire and is used to coat drill bits, and its dioxide is used as an intensely white pigment. For 10 points, name this transition metal frequently used in aero
Though it is not chlorine, one compound with element is used in a reaction that couples ketone or aldehyde groups into alkenes, the McMurry reaction. One mineral containing it, rutile, is responsible for asterisms in gems. Its namesake sponge is purified by leaching in the Kroll process, which replaced the Hunter process. This element's nitride is notable for its hardness equivalent to sapphire and is used to coat drill bits, and its dioxide is used as an intensely white pigment. For 10 points, name this transition metal frequently used in aerospace technology because of its light yet durable nature, with atomic number 22 and symbol Ti.
Though it is not chlorine, one compound with element is used in a reaction that couples ketone or aldehyde groups into alkenes, the McMurry reaction.
titanium [accept Ti before mention] 