Manipur Board Solutions for Chapter: Chemical Bonding, Exercise 2: Let us answer these

Using dots $\left(\circ \right)$ and crosses $\left(\times \right)$ to represent valence electrons, show the formation of covalent bonds in Carbon dioxide.

Using dots $\left(\circ \right)$ and crosses $\left(\times \right)$ to represent valence electrons, show the formation of covalent bonds in Carbon tetrachloride.

Why does Carbon tetrachloride not conduct electricity?

How does a co-ordinate bond differ from a normal covalent bond?

Why does ${\mathrm{H}}_2$ molecule exists while ${\mathrm{He}}_2$ molecule does not exist?

Why is $\mathrm{HF}$ polar while, ${\mathrm{H}}_2$ and ${\mathrm{F}}_2$ are not polar?