Why is Au single charged anion stable but Cu single charged anion does not exist?
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due to cu is not exit is single charge because it confrigation of cu 3d10 4s1 so when we use cu+ loose of one electron so confrigation is 3d10.. it's not exits as show transition element and lower reducing potential
as Ag+ we take
That is a Krypton inner core followed by a complete 4d shell of 10 electrons, and a single electron in a 5s orbital. The single electron in the highest level is the valence electron, and is most likely to interact in a chemical reaction. This electronic structure explains the chemistry of silver. A single electron outside a completely filled shell has a lower ionization energy than an electron in a filled inner shell. That explains silver's +1 oxidation state. Silver readily forms binary molecules with the Halogens. Another very common silver compound is Ag2S, silver sulfide. This is a dark-to-black compound appearing on silver items as tarnish. It can be removed with metal polishing cloths, but that also removes some silver. If it is an object that can be plafed in hot water, there is a neat way to keep the silver! Reduce it back to silver metal. Using an aluminum vessel, crumple some aluminum foil, and place it so it is touching the silver item and the pan. Add water to cover the item and foil, and then add some sodium carbonate (Also known as washing soda), and bring the solution to a boil. You will smell the rotten-egg odor of hydrogen sulphide as the silver is reduced back to Ag and the sulfur converted to H2S.
as Ag+ we take
That is a Krypton inner core followed by a complete 4d shell of 10 electrons, and a single electron in a 5s orbital. The single electron in the highest level is the valence electron, and is most likely to interact in a chemical reaction. This electronic structure explains the chemistry of silver. A single electron outside a completely filled shell has a lower ionization energy than an electron in a filled inner shell. That explains silver's +1 oxidation state. Silver readily forms binary molecules with the Halogens. Another very common silver compound is Ag2S, silver sulfide. This is a dark-to-black compound appearing on silver items as tarnish. It can be removed with metal polishing cloths, but that also removes some silver. If it is an object that can be plafed in hot water, there is a neat way to keep the silver! Reduce it back to silver metal. Using an aluminum vessel, crumple some aluminum foil, and place it so it is touching the silver item and the pan. Add water to cover the item and foil, and then add some sodium carbonate (Also known as washing soda), and bring the solution to a boil. You will smell the rotten-egg odor of hydrogen sulphide as the silver is reduced back to Ag and the sulfur converted to H2S.
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