The metal that is used in clinical thermometers.
Brittle means which breaks into fragments.
Lustre means shine.
Recall the properties of non metals and metals with their exceptions.
Look for which one is soft in nature.
Recall what are homogenous and heterogenous mixture.
An allotrope of carbon.
This metal is not found in free state.
Malleable is one which can be beaten in to sheets.
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