Question

What will form when two Helium atoms will added to each other

Answer 1

Beryllium.

Helium has 2 protons. Beryllium has 4. 
As far as the number of neutrons in each helium atom is concerned, that will only determine which isotope of Beryllium is formed. 
It won’t change the element. 
The number of electrons will only determine whether the Beryllium atom is electrically neutral, or if it is an ion. 
That won’t change the element either.