Multiple choice

The atom's nucleus is held together by which of the following:

  1. strong interactions of the lepton and gluon constituents of the atom's nucleus

  2. weak interactions of the quark and lepton constituents of the atom's nucleus

  3. strong interactions of the quark and lepton constituents of the atom's nucleus

  4. strong interactions of the quark and gluon constituents of the atom's nucleus

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The atomic nucleus is held together by the strong nuclear force, which acts between quarks mediated by gluons.