Question

question 18 (1 point)
which is true of markovnikovs rule?
○ a) it can be used to predict the isomer that will be most plentiful in some addition reactions.
○ b) it states that the small molecule will attach to the carbon of the double bond that is already bonded to the most hydrogen atoms.
○ c) it states that a maximum of four bonding electrons can be rearranged to form bonds.
○ d) a and b are true.
○ e) a, b, and c, are true.

Explanation:

Markovnikov's rule is used in addition reactions (like addition of \(HX\) to alkenes). It helps predict the major isomer. The rule states that in an addition reaction of a protic acid \(HX\) to an alkene, the hydrogen atom of \(HX\) adds to the carbon atom of the double - bond that has the greater number of hydrogen atoms (not the small molecule in general as stated in option b in a wrong way). Option c is incorrect as it has nothing to do with electron rearrangement for bond - forming in the context of Markovnikov's rule. Option a is correct as it is used to predict the major (most plentiful) isomer in some addition reactions.

Answer:

A. It can be used to predict the isomer that will be most plentiful in some addition reactions.