DP Chemistry (first assessment 2025)
Question 21M.2.SL.TZ1.a(i)
| Date | May 2021 | Marks available | [Maximum mark: 1] | Reference code | 21M.2.SL.TZ1.a(i) |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | Draw | Question number | a(i) | Adapted from | N/A |
a(i).
[Maximum mark: 1]
21M.2.SL.TZ1.a(i)
Draw the Lewis (electron dot) structure of hydrogen sulfide.
[1]
Markscheme
OR 
✔
Accept any combination of lines, dots or crosses to represent electrons.
Syllabus sections
Structure 2. Models of bonding and structure » Structure 2.2—The covalent model » Structure 2.2.1—A covalent bond is formed by the electrostatic attraction between a shared pair of electrons and the positively charged nuclei. The octet rule refers to the tendency of atoms to gain a valence shell with a total of 8 electrons. Deduce the Lewis formula of molecules and ions for up to four electron pairs on each atom.