Question

................ in the form of diamond is the hardest non metal​

Answer 1

Answer:

Explanation:

Amorphous carbon

Answer 2

Answer:

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Explanation:

Diamond is the hardest naturally occurring material, but graphite is one of the softest. Although graphite is an electrical conductor, diamond is an insulator. And of course, there's amorphous carbon: soot. The isotope carbon-14 forms in the atmosphere when neutrons interact with nitrogen-14.