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20-08-2018
Chemistry

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Without calculation what is the approximate atomic mass of neon

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30-08-2018

20 u

You can’t do this without some calculation.

The easiest way is to argue that most atoms of neon have 10 protons and 10 neutrons.

Each proton and neutron has a mass of about 1 u, so the approximate atomic mass of neon is 20 u.

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