Atomic Structure

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1. Topic 1

   Atoms and Molecules

   Atoms make up elements; molecules are groups of atoms.

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2. Topic 2

   Radicals and Atomicity

   Atomicity counts atoms; radicals behave as single charged units.

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3. Topic 3

   First Twenty Elements

   Element symbols must be written with the correct capital and small letters.

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4. Topic 4

   Valency

   Valency tells how many bonds or combining units an atom or radical can form.

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