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Date	November 2014	Marks available	1	Reference code	14N.1.hl.TZ0.12
Level	HL	Paper	1	Time zone	TZ0
Command term		Question number	12	Adapted from	N/A

Question

What is the correct number of sigma ${\text{(}}\sigma {\text{)}}$ and pi ${\text{(}}\pi {\text{)}}$ bonds in prop-2-enenitrile, ${\text{C}}{{\text{H}}_{\text{2}}}{\text{CHCN}}$ ?

N14/4/CHEMI/HPM/ENG/TZ0/X12

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Syllabus sections

Additional higher level (AHL) » Topic 14: Chemical bonding and structure » 14.1 Covalent bonding and electron domain and molecular geometries

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17M.2.hl.TZ2.4b.i: Discuss the bonding in the resonance structures of ozone.
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17M.1.hl.TZ2.10: Which does not show resonance? A. PO43– B. C6H6 C. C6H12 D. O3
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16N.2.hl.TZ0.5b: (i) Draw diagrams to show how sigma (σ) and pi (π) bonds are formed between atoms. (ii)...
16N.1.hl.TZ0.15: What is the hybridization of the numbered atoms in ethanoic acid?
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16M.1.hl.TZ0.14: In which group do both compounds contain delocalized...
16M.1.hl.TZ0.11: Which species breaks the octet rule? A. PCl3B. BF4−C. SCl4D....
15M.1.hl.TZ1.12: What is correct for ${\text{PC}}{{\text{l}}_{\text{5}}}$ ?
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15M.2.hl.TZ1.1e: Predict and explain the difference in carbon-oxygen bond lengths in ethanedioic acid and its...
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15M.2.hl.TZ2.9c.iii: Explain why both ${\text{PB}}{{\text{r}}_{\text{3}}}$ and...
15M.2.hl.TZ2.9d.iii: Describe sigma $(\sigma )$ and pi $(\pi )$ bonds between atoms. $\sigma$ ...
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14M.1.hl.TZ2.12: Which molecule is trigonal bipyramidal in shape? A. ...
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14M.2.hl.TZ2.4d: In terms of $\sigma$ and $\pi$ bonds, describe the two oxygen-oxygen bonds in the Lewis...
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14N.3.hl.TZ0.22a: Explain how the bonding in ${{\text{O}}_{\text{2}}}$ and ${{\text{O}}_{\text{3}}}$ ...
14N.3.hl.TZ0.22b: The chemical balance of the stratosphere is disrupted by the presence of chlorofluorocarbons...
14N.3.sl.TZ0.20a: Describe, using equations, the formation and depletion of ozone in the stratosphere by...
13N.1.hl.TZ0.13: How many sigma $(\sigma )$ and pi $(\pi )$ bonds are there in...
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13M.2.hl.TZ1.6c.iii: Predict the shapes and the bond angles in the two molecules.
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13M.1.hl.TZ2.12: How many sigma ( $\sigma$ ) and pi ( $\pi$ ) bonds are there in the following molecule?
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09M.2.hl.TZ1.6a.ii: ${\text{NH}}_2^ -$
09M.2.hl.TZ1.6a.iii: ${\text{Xe}}{{\text{F}}_{\text{4}}}$
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09M.2.hl.TZ1.6a.i: ${\text{PC}}{{\text{l}}_{\text{3}}}$
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09M.3.hl.TZ1.E4b: Use equations to describe the mechanism of ozone depletion catalysed by the...
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09M.1.hl.TZ2.14: Which of the following best describes the formation of $\pi$ bonds? A. They are...
09M.1.hl.TZ2.15: What is the hybridization of the carbon atom, and the number of $\sigma$ and $\pi$ ...
09M.2.hl.TZ2.5b.i: ${\text{SiF}}_6^{2 - }$
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11M.1.hl.TZ1.10: How many $\sigma$ and $\pi$ bonds are present in a molecule of propyne,...
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11M.3.hl.TZ1.E4b: CFCs and ${\text{N}}{{\text{O}}_{\text{x}}}$ are pollutants responsible for the depletion...
11M.1.hl.TZ2.14: Which species does not have delocalized electrons? A. ${\text{NO}}_3^ -$ B. ...
11M.1.hl.TZ2.13: How many sigma and pi bonds are there in propyne,...
12M.1.hl.TZ2.13: Retinol (vitamin A) contains a total of 5 double bonds and 46 single bonds. Which...
12M.2.hl.TZ2.4: Draw the Lewis structures, predict the shape and deduce the bond angles for xenon...
12M.2.hl.TZ2.7a.vii: Predict and explain the bond lengths and bond strengths of the carbon-oxygen bonds in...
11N.2.hl.TZ0.6d.i: Compare the formation of sigma ( $\sigma$ ) and pi ( $\pi$ ) bonds between the carbon atoms...
11N.3.hl.TZ0.E5: One of the winners of the 1995 Nobel Prize in Chemistry was Paul J. Crutzen, who showed that...
11N.2.sl.TZ0.6c: Nitrogen monoxide, NO, is involved in the decomposition of ozone according to the following...

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