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2.1.4 Calculating relative atomic mass from isotopic abundance
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What relative atomic mass means

What relative atomic mass means

Relative atomic mass, ArA_rAr​, is the weighted mean mass of an element's atoms compared with one-twelfth of the mass of a carbon-12 atom. It takes account of both the relative isotopic mass of each isotope and how abundant that isotope is.

2.1.4 Calculating relative atomic mass from isotopic abundance Lesson

  1. GCSE
  2. /Chemistry
  3. /2.1.4 Calculating relative atomic mass from isotopic abundance

Step-by-step lessons on Edexcel GCSE Chemistry 2.1.4 Calculating relative atomic mass from isotopic abundance. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

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