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| • | A reminder: |
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| • | Only valence
electrons are involved in |
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| bonding. Group
No. = # valence e-s for A |
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| elements. |
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| • | Covalent
bonds are formed |
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| • | Each atom in bond
attains noble gas |
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| configuration by
sharing of e- pairs (H2 |
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| bond only has 2
e-’s) |
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