Which of the following metals exist in the Free State?

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Gold

Platinum

Mercury

All of the above

answer is D.

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Detailed Solution

concept - Metals are elements that can donate electrons and can form positive ions. Most metals are lustrous, malleable, and ductile.
Now, the metals, to exist in a free state, should be less reactive. If the metal is quite reactive in nature then it will react with its surroundings and will exist in the compound or mixture form. Now, the reactivity series is a chart in which metals are arranged in order of their reactivity. The metals which are found at the bottom of the reactivity series are the least reactive. Therefore, found in a free state.
So, metals like gold, platinum, mercury, and silver are found in the free state. Due to their less reactive nature, they are used to make jewellery.
Hence, the correct answer is 4.

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