Question : Which of the following is a non-metal that can exist in different forms?
Option 1: Mercury
Option 2: Carbon
Option 3: Lithium
Option 4: Potassium
Correct Answer: Carbon
Solution : The correct answer is Carbon.
Carbon is a non-metal that can exist in different forms and it is called an allotrope. Carbon is a chemical element with atomic number 6 and is represented by the symbol C. Graphite, Diamond, and Fullerene are the 3 common forms of carbon. Diamond has a very high melting and boiling point, and it is the hardest substance.
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