List the following carbocations in decreasing order of their stability.

Which is more stable: a methyl cation or an ethyl cation? Why?

Rank the following carbocations in each set from most stable to least stable:

b.

Rank the following carbocations in each set from most stable to least stable:

a.

Which carbocation is more stable?

a.

Rank the following carbocations from most stable to least stable:

(a) Rank the following carbocations from least stable to most stable. (b) Which would you expect to form first? (c) Which would you expect to react most quickly with a bromide ion (Br^⁻) ? [Carbocations, like radicals, are electron deficient.]

Which species in each pair is more stable?

e.