Which of the following particles has a quark content of uud?
A)proton
B)neutron
C)electron
D)pion
E)kaon

Question

Quizplus · Accepted Answer

The proton has a quark content of uud, meaning it is composed of two up quarks and one down quark. The neutron (choice B) has a quark content of udd, meaning it is composed of one up quark and two down quarks. The electron (choice C) is a lepton and does not have quarks in its composition. The pion (choice D) and kaon (choice E) are mesons and have a quark-antiquark composition.

Which of the Following Particles Has a Quark Content of Uud