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Posted by on Monday, December 10, 2012 at 6:49pm.

What is the Mass number and Atomic number for the element B (Boron)? It is for a homework sheet and I am blanked out. I forgot my text book. Can anyone help me?

  • Science - , Monday, December 10, 2012 at 6:53pm

    atomic # 5
    atomic mass 10.81

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