Chemistry · May / June 2019 · Paper 11 · Question 28

Palladium is an element, atomic number 46. Some of its properties, and the properties of its compounds, can be predicted from its position in the Periodic Table. Which row is correct? | | predicted property of palladium | predicted property of palladium compounds | |---|---|---| | A | Its density is similar to the density of sodium. | Some of them can act as catalysts. | | B | Its density is similar to the density of sodium. | They are white in the solid state. | | C | It is present in compounds in more than one oxidation state. | Some of them can act as catalysts. | | D | It is present in compounds in more than one oxidation state. | They are white in the solid state. |

1. AIts density is similar to the density of sodium. / Some of them can act as catalysts.
2. BIts density is similar to the density of sodium. / They are white in the solid state.
3. CIt is present in compounds in more than one oxidation state. / Some of them can act as catalysts.
4. DIt is present in compounds in more than one oxidation state. / They are white in the solid state.

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