- Key Concept Check
9. Summarize What are
median, mean, and mode

The median is the middle number in a sorted collection of numbers. The mean is the average number in a collection of numbers. The mode is the most frequent number in a collection of numbers.

Explanation:

Median, mean, and mode are all math concepts pertaining to data sets. Hope this helped :)

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.