| Atoms – Constituent Parts I |
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| • | Atoms contain 3 kinds of particles: |
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| – | Electrons –
in orbits Negatively charged |
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| Very low mass (1/1836 mp) |
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| – | Protons -- in nucleus Positively charged |
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| More “massive” |
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| – | Neutrons – in
nucleus Electrically neutral |
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| mn mp |
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