Question
What is electronegativity?
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Answer
An atom's tendency to attract shared bonding electrons.
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Question
What oxidation number does oxygen usually have, and what is the major exception?
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Answer
Usually −2; in peroxides, −1.
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Question
How do oxidation numbers help with redox questions?
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Answer
Changes identify oxidation, reduction, and redox balancing.
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Question
What is Avogadro's number?
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Answer
6.02214076×1023 particles per mole.
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