which build up matter, i.e., they are seen as the "elementary particles'' like the proton and neutron, which are each constructed from up and down quarks.
There are 2 quarks :
1) UP Quark
2) DOWN Quark
UP Has +2e/3 charge and DOWN -e/3
Electron consist of three down quark and proton of 2 up and 1 down quark ! :)
(solve my problem : solveit.tk)
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