Diamond is very hard, because

Assertion (A) : Graphite is chemically more reactive than diamond . Reason (R) : Diamond is very hard but fraphite si soof .

Assertion (A) : Graphite is chemically more reactive than diamond . Reason (R) : Diamond is very hard but fraphite si soof .

Assertion (A) : Graphite is soft while diamond is very hard . Reason (R) : Graphite has a hree -dimensional structure while diamond has planer struture .

Assertion (A) : Graphite is soft while diamond is very hard . Reason (R) : Graphite has a three -dimensional structure while diamond has planer struture .

Diamond is hard because all the four valence electrons are bonded to four carbon atoms by comvlent bonds .

Diamond is hard because all the four valence electrons are bonded to four carbon atoms by comvlent bonds .

Exlain why diamond is very hard.

Explain, why diamond is very hard but graphite is soft .