DP Chemistry (last assessment 2024)
Question 18M.2.hl.TZ1.1h
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.2.hl.TZ1.1h |
| Level | hl | Paper | 2 | Time zone | TZ1 |
| Command term | Describe | Question number | h | Adapted from | N/A |
h.
[Maximum mark: 2]
18M.2.hl.TZ1.1h
Urea, (H2N)2CO, is excreted by mammals and can be used as a fertilizer.
(h)
Describe the bond formation when urea acts as a ligand in a transition metal complex ion.
[2]
Markscheme
lone/non-bonding electron pairs «on nitrogen/oxygen/ligand» given to/shared with metal ion
co-ordinate/dative/covalent bonds
[2 marks]
