Question

क्या कारण है कि हीरा, ग्रेफाइट से अधिक कठोर है, जबकि दोनों ही कार्बन से बने हैं ?

Answer 1

HEY MATE HERE IS YOUR ANSWER
diamond have tightly packed bonds but graphite have loosely packed bonds and also diamond is purest form of carbon with specialised properties that graphite not have

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