Q12 / 170 · Manipal (MET) 2021 · Chemistry

What is the characteristic valence shell configuration of coinage metals ?

A
$n s^2 n p^6$
B
$(n-1) d^2 n s^2$
C
$n d^9 n s^1$
Correct answer
D
$(n-1) d^{10} n s^1$

Solution

Coinage metals are $\mathrm{Cu}, \mathrm{Ag}$ and Au . They are transition metal and present in group II or IB. The valence shell configuration is $(n-1) d^{10} n s^1$.

Hence, the correct answer is option: 'D'.

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