Question

during the formation of the p-n junction, due to need for charge neutrality, there is no exchange of charge between the two sides forming the junction true and false

Answer 1

After joining a p-type and an n-type :

The electrons from the n region near the p-n interface freely move into the p region leaving behind positively charged ions in the n region.

They recombine with holes in p to forming negatively charged ions in the p region.

In the same way holes from the p region near the p-n interface diffuse into the n region to combine with electrons to form positively charged ions in the n region.

Therefore the statement above is false.