Non-metals exist in various states at room temperature: solid (e.g., Carbon, Phosphorus, Sulphur, Boron), liquid (Bromine), and gas (e.g., Hydrogen, Oxygen, Nitrogen, noble gases like Krypton, Radon). Among the given options, Bromine is a liquid, while Krypton and Radon are gases. Boron is a non-metal (or metalloid often grouped with non-metals) and exists as a solid under standard conditions.
Which one of the following non-metals is present in solid state ?
Asked in UPSC CISF AC EXE 2017 · Topic: Non-metals (General characteristics and properties of non-metals)
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