1. State octet rule
2. Why are noble gases non-reactive?
3. Define the term ion.Name the two types
of ions?
4. How many shells are present in Na+ ion?
5. What is the number of electrons present
in Cl- ion?
6. Name the type of force of attraction
present in ionic compounds.
7. In sodium chlloride lattice, how many
Cl- ions surround each Na+ ion?
8. How many electron pairs are shared between
(i) Cl2 (ii) O2 and (iii) HCl molecules?
9. Which of the following statements are
true for covalent molecules?
i ) They are poor conductors of electricity.
ii ) Their boiling points are high.
iii ) They have definite shape
