Which one of the following sets consists of all coinage metals ?
Correct answer: B. Cu Ag Au
- A. Cu Hg Au
- B. Cu Ag Au
- C. Ag Au Hg
- D. Cu Fe Au
Explanation
The coinage metals are copper, silver, and gold, written as Cu, Ag, and Au; they are Group 11 metals traditionally used in coinage. The likely mistake is including mercury, but Hg is a Group 12 metal and is not part of the standard coinage-metal set.
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About Electronic Structure of d-Block Elements
The electronic structure of d-block elements covers the filling of the (n-1)d and ns orbitals, general electronic configurations, and the exceptions shown by chromium and copper. It explains how partially filled d orbitals produce variable oxidation states, coloured ions, magnetic behaviour and complex formation, while distinguishing transition elements from elements with completely filled d subshells.
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