Final answer:
The statement that Copper metal will displace silver from an aqueous solution is NOT true since copper is less reactive than silver, according to the activity series. The correct option is (1).
Step-by-step explanation:
Regarding the displacement reactions, the statement that is NOT true is: Copper metal will displace silver from aqueous solution. Based on the activity series, a metal can only displace another metal from a compound if it is more reactive than the metal in the compound. Copper is actually less reactive than silver, and therefore, it cannot displace silver from solution.
The activity series lists metals in the order of reactivity, with the most reactive metals being at the top of the series. Sodium (Na) will displace cadmium (Cd) from aqueous solution because sodium is above cadmium in the activity series. Similarly, zinc (Zn) will displace hydrogen from steam because it is above hydrogen in the series, and calcium (Ca) will displace hydrogen from acids for the same reason.
However, since potassium (K) is above lithium (Li) in the activity series, potassium cannot displace lithium from an aqueous solution.