Question

Exceptions in chapter metals and non metals class 10th
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Answer 1

•Mercury and gallium both are metals but at room temperature, they are in liquid state.

•Metals have high melting point.

•Most of the non-metals have very low density. Exception is diamond, a form of carbon.

Elements to the left of the line are considered metals. Elements just to the right of the line exhibit properties of both metals and nonmetals and are termed metalloids or semimetals. Elements to the far right of the periodic table are nonmetals. The exception is hydrogen (H), the first element on the periodic table.