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What is the correct Lewis structure for hydrazoic acid, HN3, including the formal charges, if any? What is the correct Lewis structure for hydrazoic acid, HN<sub>3</sub>, including the formal charges, if any? A) I B) II C) III D) IV E) V What is the correct Lewis structure for hydrazoic acid, HN<sub>3</sub>, including the formal charges, if any? A) I B) II C) III D) IV E) V


A) I
B) II
C) III
D) IV
E) V

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Which of the following compounds has a higher boiling point? Explain why. Which of the following compounds has a higher boiling point? Explain why.

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Compound I has a higher boiling point th...

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Which of the following statements best explains the observation that hydrogen fluoride has the highest boiling point of all the hydrogen halides?


A) The fluorine in HF is the smallest atom for all of the halogens
B) Fluorine is the most electronegative of the atoms
C) Hydrogen fluoride can participate in hydrogen bonding
D) HF is very reactive and can react and dissolve glass
E) HF is a weak acid, and doesn't completely dissociate

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Rank the indicated C-C bonds in increasing order of bond length. Rank the indicated C-C bonds in increasing order of bond length. A) I < II < III B) II < III < I C) III < I< II D) II < I< III E) I < III< II


A) I < II < III
B) II < III < I
C) III < I< II
D) II < I< III
E) I < III< II

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Rank the following compounds in order of decreasing dipole moment. Rank the following compounds in order of decreasing dipole moment. A) I > II > III B) II >III > I C) I > III > II D) III > I > II E) II > I > III


A) I > II > III
B) II >III > I
C) I > III > II
D) III > I > II
E) II > I > III

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How many molecular orbitals are formed, when the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule?


A) 1
B) 2
C) 3
D) 4
E) 5

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Which element has the following electronic configuration? Which element has the following electronic configuration? A) boron B) carbon C) silicon D) nitrogen E) fluorine


A) boron
B) carbon
C) silicon
D) nitrogen
E) fluorine

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Which of the following compounds contains the shortest carbon-carbon bond? Which of the following compounds contains the shortest carbon-carbon bond? A) I B) II C) III D) IV E) All of these


A) I
B) II
C) III
D) IV
E) All of these

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What force is NOT taken into account in the formation of a covalent bond?


A) repulsion between two positively charged nuclei
B) force of attraction between positively charged nuclei and negatively charged electrons
C) repulsion between two negatively charged nuclei
D) repulsion between positively charged nuclei and negatively charged electrons

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Which molecular orbitals are formed, when the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule?


A) two bonding molecular orbitals
B) only one bonding molecular orbital
C) one bonding and one antibonding molecular orbital
D) two antibonding molecular orbitals
E) only one antibonding orbital

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All single bonds can be classified as _______.


A) nonpolar covalent
B) polar covalent
C) ionic
D) sigma bonds
E) pi bonds

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