The up quark u has charge +2e/3 and strangeness 0; the down quark d has charge -e/3 and strangeness 0; the strange quark s has charge -e/3 and strangeness -1.This means there can be no baryon with:

Question

Quizplus · Accepted Answer

To form a baryon, three quarks must be combined. Therefore, the total charge and strangeness of the three quarks must add up to integers. For option D, +2e/3 + (-e/3) + (-e/3) = 0 (integer charge) and 0 + 0 + (-1) = -1 (integer strangeness). However, +2e/3 + (-e/3) + (-e/3) = 0 + (-e/3) + (-e/3) = -2e/3, which is not an integer multiple of e, so there can be no baryon with charge +e and strangeness -2.

The Up Quark U Has Charge +2e/3 and Strangeness 0;