In this project, you will create models of various atomic nuclei and how they change during radioactive decay, fission, or fusion. First, you will complete a table that summarizes how the structure of the nuclei changes during each of these processes. This will help you plan your models.

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.