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Type: Multiple-Choice
Category: Atomic Structure
Level: Grade 10
Author: jimhoj
Created: 10 months ago

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Atomic Structure Question

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Grade 10 Atomic Structure

72.2% of element [math]X[/math] is mass number 85. 27.8% is mass number 87. What is the average atomic mass of element [math]X[/math]?
  1. 86.0 g
  2. 85.6 g
  3. 86.4 g
  4. 85.0 g
  5. You can't tell
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