Chapter 6 (master & chemistry) – Flashcards
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How many line pair are
On the central BrF3?
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2
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Which choice represents a pair of resonance structures? Note that lone pairs have been omitted for clarity.
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O?N=O and O=N?O
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How many resonance structures can be drawn for ozone, O3?
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2
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Which statement best describes an O3 molecule?
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Each atom in ozone is connected to another atom by a bond having a bond order of 1.5.
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For a molecule of fluorous acid, the atoms are arranged as HOFO. (Note: In this oxyacid, the placement of fluorine is an exception to the rule of putting the more electronegative atom in a terminal position.)
What is the formal charge on each of the atoms? Enter the formal charges in the same order as the atoms are listed.
FC=(valence e? infree atom)?12(bonding e?shown)?(nonbonding e?shown)
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H,O,F,O = 0,0,+1, -1
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What is the electronic geometry of H2O?
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tetrahedral
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What is the electronic geometry of SCl4?
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trigonal bipyramidal
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What is the electronic geometry of BF3?
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trigonal planar
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What is the electron-domain (charge-cloud) geometry of ICl5?
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octahedral
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What is the molecular geometry of ICl5?
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square pyramid
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Ignoring lone-pair effects, what is the smallest bond angle in ICl5?
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90 degrees
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Which choice best describes the polarity of ICl5?
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The molecule is polar and has polar bonds
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What is the bond order of Br2?
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1
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What is the bond order of SO?
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2
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What is the bond order of CO?
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3
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Rank the following molecules or ions in order of decreasing bond energy:
bromine: Br2, sulfur monoxide: SO, carbon monoxide: CO
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carbon monoxide, sulfur monoxide, bromine
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Rank the following molecules or ions in order of decreasing bond length:
bromine: Br2, sulfur monoxide: SO, carbon monoxide: CO
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bromine, sulfur monoxide, carbon monoxide
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Which set of elements is arranged in order of increasing electronegativity?
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Ge < As < S < O
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Which compound is likely to have an incomplete octet?
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BH3
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Which pair of atoms forms the most polar bond?
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Si and F
