Question

Which of the following is true about silver atom?

• A. It has incomplete d-subshell in ground state
• B. It is a transition element
• C. It has incomplete d-subshell in $A{g}^{2+}$ state
• D. Both (b) and (c)

Answer 1

The correct option is D Both (b) and (c)

Atomic number of Ag is 47
Its electronic configuration is $\left[Kr\right]4d^{10}5s^1$
In the ground state, the silver atom has $4d^{10}$ configuration which shows that it has completely filled d-orbitals.
In $A{g}^{+}$ state,
Electronic configuration : $\left[Kr\right]4d^{10}$ (completely filled d-orbital)

In $A{g}^{2+}$ state,
Electronic configuration : $\left[Kr\right]4d^9$ (incompletely filled d-orbital)
Thus, silver has incompletely filled d-orbital in one of its ionic state. Hence, it is a transition element.
Thus, option (d) is correct.