DP Chemistry (last assessment 2024)

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Question 21M.2.hl.TZ1.3g

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Date May 2021 Marks available [Maximum mark: 2] Reference code 21M.2.hl.TZ1.3g
Level hl Paper 2 Time zone TZ1
Command term Discuss Question number g Adapted from N/A
g.
[Maximum mark: 2]
21M.2.hl.TZ1.3g

Magnetite, Fe3O4, is another ore of iron that contains both Fe2+ and Fe3+.

(g)

Transition metals like iron can form complex ions. Discuss the bonding between transition metals and their ligands in terms of acid-base theory.

[2]

Markscheme

ligands donate pairs of electrons to metal ions
OR
forms coordinate covalent/dative bond✔

ligands are Lewis bases
AND
metal «ions» are Lewis acids ✔

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