State whether the following statement is true or false:

The aqueous solution of an ionic compound conducts electricity because there are plenty of free electrons in the

8 Write down the electronic configuration of

(i) sulphur atom, and

(ii) sulphide ion. (At. No. of S = 16)

9 What type of chemical bonds are present in a solid compound which has a high melting point, does not conduct electricity in the solid state but becomes a good conductor in the molten state ? 11 What type of bonds are present in hydrogen chloride and oxygen? 12 Write the electron-dot structures for the following molecules:

(i) NaCl

(ii) Cl₂