Is Akali Ap or Ad?

Electro scales well with Akali because she primarily builds AP.

Is Ad Akali better than AP Akali?

After looking a bit at the scalings I realised that her AD scalings are by far better than her AP scalings. If we look at the total scaling of a combo like lets say a simple EE+Q+1 Passive proc you get 2.4 bonus AD + 1.65 total AD. Thats nothing compared to AD even if you consider that AP is easier to get.

Can you build Akali ad?

AD Akali will be harder to counter, bcoz they can't just build Armor or Magic resist to fight back her, while she still deal a huge mixed type damage. The only way to fight her is to kill her soon, so that we have Tanky Akali.