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2.1 Atomic structure

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Question 17
H

In a sample of boron there are 25 atoms of boron-10 for every 100 atoms of boron-11.

What is the relative atomic mass of boron, to 1 decimal place?

[1]
A

10.2

B

10.5

C

10.8

D

13.5

Markscheme

2.1 Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /2.1 Atomic structure

46 exam-style questions on Edexcel GCSE Chemistry 2.1 Atomic structure, covering 2.1.1 Development of the atomic model, 2.1.2 Structure of the atom and subatomic particles, 2.1.3 Mass number, isotopes and relative atomic mass, and 2.1.4 Calculating relative atomic mass from isotopic abundance. Each one has a worked solution and a mark scheme showing where the marks go.

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