Q. Which is the general outer electronic configuration of the coinage metals?
A) $ns^{2}np^{6}$
B) $(n - 1)d^{10}ns^{1}$
C) $(n - 1)d^{10}ns^{2}$
D) $(n - 1)d^{9}ns^{2}$
Explanation
(b)
Coinage metals are transition metals but they cannot work as transition metal because they have completely filled $d$-orbital.
Group 1B elements are called coinage metals (Cu, Ag, Au).
Their general outer electronic configuration is $(n - 1)d^{10}ns^{1}$.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.