Dr. H.C. Srivastava and SUMEDHA SRIVASTAVA Solutions for Chapter: Solid State, Exercise 4: ESSAY (LONG ANSWER) TYPE QUESTIONS

For diamond, state the element present at the lattice sites, the number of nearest neighbours for each atom and the type of unit cell.

For sodium chloride crystal, state the type of unit cell.

For sodium chloride crystal, state the nature of forces holding the particles together.

For sodium chloride crystal, state the number of nearest neighbours around each sodium ion. 

For sodium chloride crystal, state the geometry of the sodium ions which are arranged around a chloride ion.

Diamond is hard and a bad conductor of electricity, while graphite is soft and a good conductor of electricity. Explain. State the hybridisation of carbon in both the substances.

In a body-centred and face-centred arrangement of atoms of an element, what will be the number of atoms present in respective unit cells?

Explain why graphite is soft and can be used as a lubricant.