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What does pen mean?.

What does pen mean?.-example-1
User Carsten Massmann
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1 Answer

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14 votes

Answer:

P = protons

E = electrons

N = neutrons

remember protons and neutrons (protons are positive and neutrons are neutral as you can already tell by their names) are found at the centre of the nucleus (positive mass). Whilst the electrons (negative) orbit around the shells

User Llxxbb
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