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InterviewSolution
| 1. |
In activity series platinum is placed after gold,than why gold is said to be least reactive. |
| Answer» In a\xa0reactivity\xa0series, the\xa0most reactive\xa0element is placed at the top and the least\xa0reactive\xa0element at the bottom.\xa0More reactive metals\xa0have a greater tendency to lose electrons and form positive ions . In terms of optical properties, metals are shiny and lustrous. ... The transition metals (such as iron, copper, zinc, and nickel) are slower to oxidize because they form a passive layer of oxide that protects the interior. Others, like palladium,\xa0platinum\xa0and\xa0gold\xa0do not react with the atmosphere at all. | |