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29 April, 03:54

What is the mass number of boron

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  1. 29 April, 05:46
    0
    The average atomic mass number of boron (B) is 10.81, so you just round it up to get the mass number.

    When you round (nearest whole number) you get 11, so the mass number of boron is 11.
  2. 29 April, 06:55
    0
    The mass number of boron is 11
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