Which combination of up (u) and down (d) quarks forms a neutron?
Correct answer: C. u d d
- A. u u u
- B. u u d
- C. u d d
- D. d d
Explanation
Quarks are fundamental and elementary particles, there are six flavors of quarks =up, down, top, bottom, charm, and strange.Down, bottom, and strange are the antiparticles of up, top, and charm respectively.Three of these are combined to make any particle such as the proton, neutron, etc.A neutron consists of two down quarks and one up quark.A proton consists of two up quarks and one down quark.Both protons and neutrons are baryons. Baryons are heavy subatomic particles made up of three quarks.
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