DP Chemistry (first assessment 2025)
Question 21M.1A.SL.TZ1.12
| Date | May 2021 | Marks available | [Maximum mark: 1] | Reference code | 21M.1A.SL.TZ1.12 |
| Level | SL | Paper | 1A | Time zone | TZ1 |
| Command term | Determine | Question number | 12 | Adapted from | N/A |
12.
[Maximum mark: 1]
21M.1A.SL.TZ1.12
Along which series is the bond angle increasing?
A. NH3 H2O CH4
B. CH4 NH3 H2O
C. H2O NH3 CH4
D. H2O CH4 NH3
[1]
Markscheme
C
Syllabus sections
Structure 2. Models of bonding and structure » Structure 2.2—The covalent model » Structure 2.2.4—The valence shell electron pair repulsion (VSEPR) model enables the shapes of molecules to be predicted from the repulsion of electron domains around a central atom. Predict the electron domain geometry and the molecular geometry for species with up to four electron domains.