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Tag: electrons

  • How many electron shells does Si have? 

    Periodic Table How many protons does H have?  ____ How many protons does He have?  ____ How many protons does N have?  ____ How many protons does C have?  ____ How many protons does O have? ____ How many neutrons does H have?  ____ How many neutrons does He have?  ____ How many neutrons does…