name the following. a) Two metal which are soft and dull in appearance
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The examples of metals are iron, copper, aluminium, calcium, magnesium, etc. In contrast, materials like coal and sulphur are soft and dull in appearance. They break down into powdery mass on tapping with hammer. They are not sonorous and are poor conductors of heat and electricity.
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Answer:
a. Sodium (Na) and Potassium (K) are the soft metals.
Coal and Sulphur are dull in appearance.
Explanation:
Metals are generally hard and are lustrous but there are some exception.
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