Rank the compounds in each group according to their reactivity toward electrophilic substitution. 1 = most reactive; 3 = least reactive.

a. benzaldehyde p-methylbenzaldehyde p-chlorobenzaldehyde

b. chlorobenzene o-dichlorobenzene benzene

a. benzaldehyde (2), p-methylbenzaldehyde (1), p-chlorobenzaldehyde (3)

b. chlorobenzene (2), o-dichlorobenzene (3), benzene (1)

Explanation:

a. Based on inductive effect, p-chlorobenzaldehyde (3) is the least reactive, benzaldehyde (2) is less reactive while p-methylbenzaldehyde (1) is the most reactive.

b. Based on the location of either meta, ortho and para on the benzene ring, benzene is the most reactive (1), chlorobenzene is less reactive (2), o-dichlorobenzene (3) is the least reactive.

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

what does the table look like