The walls of your refrigerator must keep as much energy as possible from getting inside the refrigerator. The refrigerator will use a lot of this material, so the cost must be low. Which material would you use to make the refrigerator's inner walls?

I would use Aluminum because it helps keep things cool and cold, while in the freezer, I would the same thing.

hope this helps.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.