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Question
With reference to the physical properties of metals and non-metals, state the following exception.
a non-metal which sublimes and is non-lustrous
Solution
A non-metal which sublimes and is non-lustrous is iodine.
Explanation:
- Sublimation: Iodine can change directly from a solid to a gas without passing through the liquid state.
- Non-lustrous: While most non-metals are non-lustrous, iodine is an exception as it exhibits a slight metallic sheen, but overall, it is still considered non-metallic in its properties.
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