element who never has 8 electrons in a proper lewis structure?

Answer 1

In many elements, it's considered most stable to have eight electrons around a single atom in a Lewis structure. This is called an octet. There are many exceptions.

Hydrogen has the electron configuration 1s^1. Hydrogen only has the 1s orbital. In it, there's only room for two electrons; one for hydrogen, and for making bonds with another atom. Since it can only have a maximum of two electrons, there's NO way for it to have 8.

Answer 2

Hydrogen.

Answer 3

Hydrogen -- it never has more than two electrons.