The total number of elements in the Group 11 is

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answer is A.

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Detailed Solution

Group 11 is made up of roentgenium, copper (Cu), silver (Ag), and gold (Au) (Rg). Rg, which has a theorised electronic configuration that places it in this group of elements, is a transactinide with a short half-life of 26 seconds that has only been detected in a laboratory setting.

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