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Boron (B) has two naturally occurring isotopes: boron-10 (abundance = 19.8%,

mass = 10.013 amu) and boron-11 (abundance = 80.2%, mass = 11.009 amu).

Calculate the atomic mass of boron.

2 Answers

5 votes
the mass of Boron using those numbers is 10.8 using sigfigs
User Egerardus
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6 votes
Boron's atomic mass is 10.811 amu
User Retendo
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