What is an example of chemical weathering
1. acid rain falls on rocks
2. chemicals from plants on rocks
3. water reacting with minerals on rock
4. All

well in order to answer this question you have to provide more information < 3

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.