Limitations of Models

What and discuss are the limitations of models of ionic lattices, covalent molecular and covalent netowrk and metallic lattices.

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models are theories. not

models
are theories. not facts
are based on assumptions
are simplifications for conveying a main idea
can change over time with new discoveries

metallic models don't have "bonds" only a sea of electrons

then what are some

then what are some advantages of models

Maybe models are all we

Maybe models are all we have?
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