Types of metals :- 1-noble metals - generally unreactive , e.g. silver, platinum , gold and palladium . 2-alkali metals - very reactive with low melting points and soft , e.g. potassium and sodium . 3-alkaline earth metals – less reactive, higher melting points and harder than alkali metals, e.g. calcium, magnesium and barium . 4-transition metals - hard, shiny, strong, and easy to shape, e ...
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