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9 Cards in this Set
- Front
- Back
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1. NH3 (pyramidal geometry) reacts with BF 3 (planar geometry) to form the addition compound, H3NBF3. What is the geometry around the nitrogen and boron centers in the addition compound? (A) Both centers are tetrahedral (B) Nitrogen is tetrahedral; boron is linear. (C) Nitrogen is pyramidal; boron is planar. (D) Nitrogen is planar; boron is pyramidal. |
(A) Both centers are tetrahedral |
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2. The molecule of the type ML4 consists of four single bonds and no lone pairs. What structure is it expected to assume? (A) square planar (B) trigonal planar (C) trigonal pyramidal (D) tetrahedral |
(D) tetrahedral |
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3. The shape that most closely describes the NF3 molecule is (A) octahedral (B) trigonal planar. (C) trigonal pyramidal. (D) tetrahedral. |
(C) trigonal pyramidal. |
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4. In which pair arc the molecules geometrically similar? (A) SO2 andCO2 (B) PH3 andBF3 (C) CO2 and OF2 (D) SO3 and O3 |
(D) SO2 and O3 |
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5. Which is planar? (A) NH3 (B) SO3 2- (C) CO3 2- (D) CCl4 |
(C) CO3 2- |
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6. Which is linear? (A) H,S (B) NH, (C) NO, (D) CO, |
(D) CO, |
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8. What is the shape of the XeF, molecule? (A) square planar (C) tetrahedral |
(A) square planar |
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9. What set of species is arranged in order of increasing 0-N-O bond angle? (A) NO;-. NO,, NO,' (B) NO,, NO,-, NO;* (C) NO;', NO,, NO; (D) |
(A) NO;-. NO,, NO,' |
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10. Which has the largest bond angle? (A) angle 0-S-O in S041- (B) (B) trigonal bipyramidal (D) trigonal pyramidal N0¡, N0¡+, N0¡- (C) angle F-Bc-F in BeF, (D) angle CI-C-C1 in HCC1, angle H-O-H in H,0 |
(C) |
