Bud works at a local grocery store. he making a large display of canned food with 25 to. the rows of canned food is given by series 4+12+20+...
a. Write the series in summation notation(sigma notation) make sure to include the upper and lower limits and the explicit formula sum
b. find the total number of cans in display

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a

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.