Chemistry

Chemistry

Problem

Boron has two isotopes B10\text{B}^{10} & B11\text{B}^{11} whose relative abundances are 20% & 80% respectively. What is the avg. atomic weight of Boron? 1) 10 2) 11 3) 10.5 4) 10.8 1) 10 2) 11 3) 10.5 4) 10.8

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