Q10 last part of the question
(Is it justified to assume that........
.........to the outer surface?)
@nishant-thakre yes,if taking a macro system,as electron movement is very negligent on proton progress.
Sorry but I can't understand
Please can you elaborate
@nishant-thakre See,electron is present in a vast space around nucleus.
The electron system is very macro compared to nuclear system.
Just think that it won't influence much of any proton movement.