1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

About neutrons and proton in nucleus

  1. Dec 24, 2013 #1
    sir i want to know why is number of neutron is more or equal number of proton in nucleus of atoms whose atomic number is more tnan one?
  2. jcsd
  3. Dec 24, 2013 #2


    User Avatar

    Staff: Mentor

    Neutrons help provide more strong force to hold the nucleus together without adding repulsive EM force. I would guess that more neutrons are required than protons because the range of the strong force is very short, less than the radius of the nucleus in higher atomic number elements, but I'm not certain.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook