PE3b - CHM 111 Exam 3 Name Do not remove staple Periodic...

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Unformatted text preview: CHM 111 Exam 3 Name___________________________________ Do not remove staple Periodic Table on Back Multiple Choice (50%) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Two resonance forms for SOCl 2 are given below. Which is favored by the octet rule and which by formal charge considerations? A) I is favored by the octet rule and II by formal charge considerations. B) I is favored by the octet rule and by formal charge considerations. C) II is favored by the octet rule and by formal charge considerations. D) II is favored by the octet rule and I by formal charge considerations. 1) 2) Which type of bond produces a charge cloud with a nodal plane containing the bond axis? A) Η B) Δ C) Η and Δ D) neither Η nor Δ 2) 3) What is the geometry around the central atom in the following molecular model of SCl 4 ? A) trigonal bipyramidal B) seesaw C) T- shaped D) linear 3) 4) Which element can expand its valence shell to accommodate more than eight electrons? A) C B) O C) He D) P 4) 5) What orbital hybridization is expected for the central atom in a molecule with a square planar geometry? A) sp 3 d 2 B) sp 3 C) sp 3 d D) sp 2 5) 1 6) A triple bond is generally composed of A) three Δ bonds. B) three Η bonds. C) one Δ bond and two Η bonds. D) two Δ bonds and one Η bond. 6) 7) Which of the following would be expected to have sp 2 hybridization on atom A? A) I and IV B) II C) I and III D) I, II, and III 7) 8) How many lone pairs of electrons are on the P atom in PF 3 ? A) 2 B) 1 C) 0 D) 3 8) 9) Of the following elements, which has the lowest electronegativity? A) Mg B) Br C) Ca D) Cl 9) 10) What is the geometry around the central atom in the following molecular model of PF 6- ? A) trigonal bipyramidal B) octahedral C) square pyramidal D) square planar 10) 11) Which one of the following is expected to exhibit resonance? A) CO 2 B) HCN C) NO 2- D) NH 4 + 11) 12) What is the molecular geometry of AsCl 3 ? A) T- shaped B) trigonal planar C) tetrahedral D) trigonal pyramidal 12) 2 13) Which bond should have the longest length? A) N = N B) N M N C) N N N D) All three bond lengths should be about the same. 13) 14) What is the molecular geometry of IF 5 ?...
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PE3b - CHM 111 Exam 3 Name Do not remove staple Periodic...

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