Unit 1 Written Flashcards
(43 cards)
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As you move down a group in the periodic table, atoms increase in size, with a greater number of energy levels.
The extra energy levels and increased covalent radius keep the bonding electrons further away from the nucleus.
Extra shells cause greater shielding effect
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Group 7 ( The halogens)
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7
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C
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B
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D
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C
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D
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C
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**C**
## Footnote
**hydrogen has an e.n value of 2.2 and a pure covalent bond has no difference in e.n values between the 2 elements sharing the electrons**
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C
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Benzene is a hydrocarbon
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