In basic solutions, this element's cation is reduced by aldehydes, but not ketones.
Ethylene is oxidized to ethylene oxide using a catalyst of this element. Alexander Borodin helped discover that carboxylate salts of this element react with bromine to form alkyl bromides. In basic solutions, this element's cation is reduced by aldehydes, but not ketones. Chloride ions can be detected by the cream-colored precipitate formed when this element is added, usually in the form of its hand-staining nitrate. Halides of this metal are used in cloud seeding and photography. It has the greatest electrical conductivity of any element. With copper, it forms the alloys shibuichi, Britannia and sterling. For 10 points, name this element with symbol Ag.
Ethylene is oxidized to ethylene oxide using a catalyst of this element.
silver [Accept Ag before mention.]