Silver-plated utensils were popular before stainless steel became widely used to make eating utensils. Silver tarnishes when it comes in contact with hydrogen sulfide, H2S, which is found in the air and in some foods. However, stainless steel does not tarnish when it
comes in contact with hydrogen sulfide. 76 In the space in your answer booklet, draw a Lewis electron-dot diagram for the compound that tarnishes silver. [1]
77 In the ground state, an atom of which noble gas has the same electron configuration as the sulfide ion in Ag2S? [1]
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