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How to draw atoms ParticleChargeMass Proton Electron Neutron An atom is the smallest part of an element + - 0 1 1 1/2000
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How to find protons electrons and neutrons Li 3 7 Proton number Mass Number PEnPEn Bottom number Top - Bottom number
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Need to know how to draw the first 20 atoms Nucleus 2,8,8
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Ions Metals Non-metals Positive!!! Negative
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Ionic bonding LiF +- Metal and a non-metal
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Ionic structure Draw out sodium dots. Draw out fluorine Crosses. Work out electron movement Re-draw ions together. Write the formula.
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NaF +- Sodium Fluoride
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More than one!! Other elements like oxygen need 2 Electrons.
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Sodium Oxide 2 Na O 2
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Be F 2+2+ - F - 2 2 Beryllium gives 2 electrons. Beryllium fluoride.
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Draw out the following KF LiCl Li 2 O BeCl 2 MgF 2
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