A catalyst with this element and four chlorine atoms catalyzes the oxidation of ethylene in the Wacker process.  This element is used in the catalyst in a reaction of aryl boronic acid and aryl halides called the Suzuki coupling.  Another coupling reaction involving aryl halides and a catalyst of this element is the Heck reaction.  Lead acetate and
A catalyst with this element and four chlorine atoms catalyzes the oxidation of ethylene in the Wacker process.  This element is used in the catalyst in a reaction of aryl boronic acid and aryl halides called the Suzuki coupling.  Another coupling reaction involving aryl halides and a catalyst of this element is the Heck reaction.  Lead acetate and quinoline are used to poison a catalyst of this element used to hydrogenate alkynes. That catalyst is named for Lindlar. This metal can store large amounts of hydrogen, and like platinum, which is in the same group, it is used in catalytic converters. For 10 points, name this group ten element named indirectly after Athena, with symbol Pd.
A catalyst with this element and four chlorine atoms catalyzes the oxidation of ethylene in the Wacker process.  
palladium