A) \[n{{s}^{2}}\text{ }n{{p}^{6}}\]
B) \[(n-1){{d}^{10}}\,n{{s}^{1}}\]
C) \[(n-1){{d}^{10}}\,n{{s}^{2}}\]
D) \[(n-1){{d}^{9}}\,n{{s}^{2}}\]
Correct Answer: B
Solution :
Coinage metals are transition metals but they cannot work as transition metal because they have completely filled d-orbital. Group IB elements are called coinage metals\[(Cu,\text{ }Ag,\text{ }Au)\]. Their general outer electronic configuration is\[(n-1){{d}^{10}}n{{s}^{1}}\].
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