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What is the hybridization state and approximate bond angle around carbon atom in HCN?


A) sp2, 1200
B) sp, 1800
C) sp3, 109.50
D) sp3, 1200
E) sp, 1200

F) B) and E)
G) A) and C)

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Which of the following statements best describes the C-Cl bond in the following compound? Which of the following statements best describes the C-Cl bond in the following compound? A) nonpolar; no dipole B) polar; \delta + at carbon and \delta - at chlorine C) polar; \delta - at carbon and \delta + at chlorine D) ionic E) None of these


A) nonpolar; no dipole
B) polar; δ\delta + at carbon and δ\delta - at chlorine
C) polar; δ\delta - at carbon and δ\delta + at chlorine
D) ionic
E) None of these

F) All of the above
G) B) and D)

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What is the correct Lewis structure for COCl2? What is the correct Lewis structure for COCl<sub>2</sub>? A) I B) II C) III D) IV E) V


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

F) A) and D)
G) All of the above

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The bonding pattern of oxygen with a formal charge of -1 could be described as:


A) One lone pair of electrons and three single bonds
B) Two lone pairs of electrons and two single bonds
C) Three lone pairs of electrons, and one single bond
D) One lone pair of electrons, one single, and one double bond
E) Zero lone pairs, and two single and one double bond

F) None of the above
G) D) and E)

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What is the correct Lewis structure for hydrocyanic acid (HCN) including the formal charges, if any? What is the correct Lewis structure for hydrocyanic acid (HCN) 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

F) A) and E)
G) A) and D)

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Which of the following compounds has two lone pairs on the central atom?


A) CO2
B) SCl2
C) NF3
D) CS2
E) SO3

F) B) and C)
G) B) and D)

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Which compound does not have a linear molecular geometry?


A) CO2
B) H2O
C) HCl
D) HCN
E) C2H2

F) C) and E)
G) D) and E)

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Following is the structure for Propranolol, and antihypertensive drug. What are the hybridization state, molecular geometry and approximate bond angle at the indicated nitrogen and oxygen atom in Propranolol? Following is the structure for Propranolol, and antihypertensive drug. What are the hybridization state, molecular geometry and approximate bond angle at the indicated nitrogen and oxygen atom in Propranolol?

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N: sp3, trigonal pyra...

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Amino acids are building blocks of proteins. Which statement best describes the physical properties of the following amino acid? Amino acids are building blocks of proteins. Which statement best describes the physical properties of the following amino acid? A) high melting points and low solubility in water B) large dipole moments and no hydrogen bonding C) high melting points and large dipole moments D) low solubility in water and small dipole moments E) small dipole moments and are hydrophobic


A) high melting points and low solubility in water
B) large dipole moments and no hydrogen bonding
C) high melting points and large dipole moments
D) low solubility in water and small dipole moments
E) small dipole moments and are hydrophobic

F) A) and B)
G) C) and E)

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What is the hybridization state and molecular geometry around sulfur atom in SOCl2?


A) sp2, tetrahedral
B) sp2, trigonal planar
C) sp3, tetrahedral
D) sp3, trigonal pyramidal
E) sp2, trigonal pyramidal

F) A) and E)
G) A) and B)

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What is the molecular geometry at the central atom in CH2Br2?


A) trigonal planar
B) trigonal pyramidal
C) sqaure planar
D) tetrahedral
E) None of these

F) C) and D)
G) B) and E)

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What are the formal charges on boron and oxygen in the following structure? What are the formal charges on boron and oxygen in the following structure? A) B = 1-, O = 1- B) B = 1-, O = 1+ C) B = 1+, O = 1+ D) B = 1+, O = 1- E) B = 1-, O = 0


A) B = 1-, O = 1-
B) B = 1-, O = 1+
C) B = 1+, O = 1+
D) B = 1+, O = 1-
E) B = 1-, O = 0

F) All of the above
G) B) and D)

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What is the correct Lewis structure for PH3? What is the correct Lewis structure for PH<sub>3</sub>? A) I B) II C) III D) IV E) V


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

F) B) and D)
G) A) and E)

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The σ\sigma bond that is part of C=C in the following compound results from the overlap of which orbitals? The \sigma bond that is part of C=C in the following compound results from the overlap of which orbitals? A) sp-sp<sup>2</sup> B) sp-sp<sup>3</sup> C) sp<sup>2</sup>-sp<sup>2</sup> D) sp<sup>2</sup>-sp<sup>3</sup> E) sp<sup>3</sup>-sp<sup>2</sup>


A) sp-sp2
B) sp-sp3
C) sp2-sp2
D) sp2-sp3
E) sp3-sp2

F) C) and E)
G) A) and D)

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For the following compound identify the polar covalent bonds and indicate the direction of dipole moment using δ\delta + and δ\delta -. For the following compound identify the polar covalent bonds and indicate the direction of dipole moment using \delta + and \delta -.

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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

F) B) and D)
G) None of the above

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Which of the following is the correct representation of partial charges at the indicated atoms? Which of the following is the correct representation of partial charges at the indicated atoms? A) I = \delta +; II = \delta +; III = \delta + B) I = \delta -; II = \delta -; III = \delta - C) I = \delta +; II = \delta +; III = \delta - D) I = \delta -; II = \delta -; III = \delta + E) I = \delta +; II = \delta -; III = \delta +


A) I = δ\delta +; II = δ\delta +; III = δ\delta +
B) I = δ\delta -; II = δ\delta -; III = δ\delta -
C) I = δ\delta +; II = δ\delta +; III = δ\delta -
D) I = δ\delta -; II = δ\delta -; III = δ\delta +
E) I = δ\delta +; II = δ\delta -; III = δ\delta +

F) A) and B)
G) B) and D)

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Draw Lewis structure for NH2CN including formal charges, if any?

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In ammonium ion, nitrogen has a valence of 4, and zero nonbonding electrons. What is the correct formal charge of nitrogen with 4 covalent bonds?


A) 2-
B) 2+
C) 1-
D) 1+
E) 0

F) C) and D)
G) A) and C)

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Which of the following structures have 1+ formal charge on the central atom? Which of the following structures have 1+ formal charge on the central atom? A) I B) II C) III D) III & V E) IV & V


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

F) B) and E)
G) A) and E)

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