# Stability of tertiary carbocation [duplicate]

Our teacher told us that a carbocation connected to 3 cyclopropane rings is among the most stable carbocations. But I am unable to understand how, as resonance (the most important factor governing stability) is absent. How did other factors bring so much stability?

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• It is not called ‘three degree’, it is tertiary. Likewise, they are secondary and primary carbocations. The degree notation should have died out a long time ago. – Jan Dec 22 '18 at 5:34
• – YUSUF HASAN Dec 22 '18 at 5:57
• chemistry.stackexchange.com/q/19090 Half-way dupe. If I vote to close it will be close-hammered because of my badge so I will leave it to others to decide if this is dupe-y enough. – Jan Dec 22 '18 at 5:59

a carbocation connected to 3 cyclopropane rings is among the most stable carbocations.

This because of various electrical effects, such as:

1. The Inductive Effect

2. Resonance

3. The Mesomeric Effect

4. Electromeric Effect

5. Hyperconjugation

Here's a link for you, to study them: Click Here. Please make sure that you learn this correctly and from standard resources, in order to avoid confusion.

There may be a little confusion between mesomeric effect and resonance effect, so here's another link just to avoid confusion. : refer to the answer by Maria Dar