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23 January, 04:57

A certain atom of helium has 2 protons and 3 neutrons in its nucleus. It has 2 electrons in its electron cloud. What is the atomic mass of this atom?

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  1. 23 January, 06:37
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    To find the atomic mass you need to do 2 protons, plus the mass of 3 neutrons to get the atomic mass of 5.
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