You are given a solution of , which of the following do you think cannot displace from solution?

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Magnesium

Zinc

Gold

Copper

answer is A.

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Detailed Solution

Concept- When a metal is added to a salt solution containing a metal with lower reactivity, a displacement reaction happens. Metals become less reactive as they move down the series from top to bottom.Metals are generally solid substances that are shiny, ductile, malleable, and excellent electrical conductors. Metals have a strong tendency to lose electrons and transform into positively charged ions. Therefore, metals are described as electropositive elements.
The metal elements in the reactivity series are listed, with the most reactive at the top and the least reactive at the bottom, in order of their reactivity. The variability in the stability of metals' electron configurations as atoms and ions is what causes their reactivity. They can all react to produce positive ions since they are all metals.
More reactive metals displace less reactive metals.
The only element from the list above that is below silver in the reactivity series is gold since it is less reactive than silver. Therefore, it is unable to remove

from the

solution.
Hence, the correct answer is option (1).

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