Both coal and diamonds are forms of elemental carbon. Coal is brittle while diamonds are considered to be the hardest of all substances known. What is the appropriate justification for this?

Biology · High School · Tue Nov 03 2020

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Coal is brittle while diamonds are considered to be the hardest of all substances known because coal and diamonds are isomers of each othe which have a similar molecular formula but different structures. Due to this difference in arrangement diamond is hardest substance whereas coal is brittle.