Diamond is harder than graphite.

Consider the following statements : 1. Diamond is hard and graphite is soft. 2. Diamond is soft and graphite is hard. 3. Diamond is a bad conductor but graphite is a good conductor . 4. Diamond is a good conductor but graphite is a bad conductor. Which of the statements given above is/are correct ?

Explain the following and give reasons : (a) diamond is hard, but graphite is soft , (b) diamond is insulator, but graphite is a conductor.

(A): Diamond is harder than silica (R): The Si-O-Si bonds in silica are weaker than C-C bonds in diamond

State whether True or False: Diamond is harder and denser than graphite.

Diamond is more stable than graphite at room temperature and pressure.

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 .

(A) Graphite is soft while diamond is hard. (R) Graphite has three dimensional structure while diamond has planar.

Diamond is insulator, but graphite is a conductor. Why?