Mathematics · Averages and Percentages
The relative atomic mass of boron (which exists in two isotopic forms 10B and 11B) is 10.81. What will be the percentage abundance of 10B and 11B, respectively?
- 119% and 81%✓
- 281% and 19%
- 338% and 62%
- 462% and 38%
Correct answer
19% and 81%
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