Given the two half-reactions, what must be done in the next step before the reaction can be balanced? First: upper A u superscript 3 plus right arrow upper A u. Second: upper I superscript minus right arrow Upper I subscript 2.
How many electrons are produced/used in this redox reaction when it is balanced?

2

3

6

Given the two half-reactions, what must be done in the next step before the reaction can be balanced?

Show the number of electrons being lost or grained.

Explanation:

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.