Question

My general question-Nucleus of atom is made up of protons which are positively charged so why dont they repel each other ?

Answer 1

Hi Bro!
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Nice question ! 
Actually In the nucleus the structure of protons in that way ,they cant move from nucleus without passing some external energy .There are neutrons between them which allow to settle them in nucleus and don't repel them .
Also they are bound by some strong forces which is greater than the forces that would lead to repel the protons 
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Answer 2

Hi Friend 
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The protons are bound together by some forces called residual forces 
In fact these forces are much more than the forces of repulsion of protons 
So ,they cant repel .
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