Standard model

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Across
  1. 2. This quark has a charge of +2/3
  2. 4. There are two types of fermions, Leptons and ...
  3. 6. The ------ number of a quark is always one third
  4. 8. Complete up and ......
  5. 9. The biggest quark
  6. 10. Complete top and .....
  7. 12. Counting anti-quarks, how many quarks are there?
  8. 13. There are two types of particle, Bosons and ...
  9. 16. Charge -1 lepton
Down
  1. 1. Different types of quarks are called -------
  2. 3. Complete charm and ....
  3. 5. These quarks are the most stable
  4. 7. Antimatter particle for the tau
  5. 11. Quark has a charge of -1/3
  6. 14. The ------ quark has a strangeness of one
  7. 15. Charge on an electron neutrino