IB Chemistry SL 2.2.3 Coordination Bonds Questions

Use exam questions to identify coordination bonds, name the lone-pair donor and distinguish dative from other bonding.

Exam points

Identify the specific dative/coordination bond in a displayed molecule or ion, including the arrow or donor–acceptor pair where shown.
State which atom or ligand donates the lone pair that becomes the shared coordinate bonding pair.
Distinguish a coordination covalent bond from ordinary covalent bonding, ionic attraction and intermolecular forces in the stated species.

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Study 2.2.3—Coordination bonds conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

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Phosphorus is an element that is an essential part of the biological molecules involved in both respiration and photosynthesis.

Another compound of phosphorus is phosphine, $\mathrm{PH}_{3}$ , it forms a phosphonium ion, $\mathrm{PH}_{4}^{+}$ .

State the types of bonds present in the phosphonium ion, $\mathrm{PH}_{4}{ }^{+}$ , and explain how these bonds are formed.

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IB Chemistry SL 2.2.3 Coordination Bonds Questions question 1