Jer3eaa3nmyDeWab Jer3eaa3nmyDeWab

24-01-2017
Chemistry

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What is relative atomic mass of an element and why is it a decimal?

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wolffiegirl wolffiegirl

02-02-2017

The atomic mass is an average of the sum of protons and neutrons in an atom. For example, chlorine always has 17 protons but it's atomic mass is 35.45. That means it usually has 18 or 19 neutrons.

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