Which career is most suited for a nuclear chemist? studying the production and use of radioactive sources designing new compounds for use in industry performing patient imaging procedures in the treatment of health issues interpreting medical images from x-rays, nuclear medicine, ultrasound, or mri

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.