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Relative Atomic Mass from a Mass Spectrometer

You can determine the relative masses of isotopes from a mass spectrum of the element.This information can be used to calculate the relative atomic mass of the element.Relative atomic mass =(% abundance of isotope 1 x mass of isotope 1 +
% abundance of isotope 2 x mass of isotope 2) ÷ 100Note:% abundance of isotope 2 = (100 - % abundance of isotope 1)

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Specification: Edexcel Chemistry (8CH0), AS-level, Topic 1: Atomic Structure and the Periodic Table. Topic: Atomic Structure.

Key terms in this lesson

isotope
Atoms of the same element with the same number of protons but a different number of neutrons.

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