Chemistry · Covalent Bonding: Concept of electronegativity, Fajan's rule, dipole moment, Valence Shell Electron Pair Repulsion (VSEPR) theory and shapes of simple molecules
Which of the following statements is/are incorrect for diamond? (a) The refracti
Which of the following statements is/are incorrect for diamond? (a) The refractive index of diamond is highest among solids. (b) Diamond is hard because all the valence electrons of each carbon atom are involved in bond formation. (c) Diamond is thermodynamically more stable than graphite. (d) One carat of diamond represents its weight.
- A. All are correct
- B. a, b and c
- C. a and b
- D. conly
Step-by-step solution
Statement (c) is incorrect because graphite is thermodynamically more stable than diamond under standard conditions. Statement (a) is considered correct in many contexts as diamond has one of the highest refractive indices among natural solids; (b) and (d) are correct. Thus only (c) is incorrect.