Question

Choose the correct option having all the elements with $d^{10}$ electronic configuration from the following:

• A. ${}^{27}\text{Co}, {}^{28}\text{Ni}, {}^{26}\text{Fe}, {}^{24}\text{Cr}$
• B. ${}^{29}\text{Cu}, {}^{30}\text{Zn}, {}^{48}\text{Cd}, {}^{47}\text{Ag}$
• C. ${}^{46}\text{Pd}, {}^{28}\text{Ni}, {}^{26}\text{Fe}, {}^{24}\text{Cr}$
• D. ${}^{28}\text{Ni}, {}^{24}\text{Cr}, {}^{26}\text{Fe}, {}^{29}\text{Cu}$

Answer 1

Answer: (B)

${}^{29}\text{Cu}, {}^{30}\text{Zn}, {}^{48}\text{Cd}, {}^{47}\text{Ag}$

Answer 2

Elements such as Cu, Zn, Ag, and Cd exhibit a $d^{10}$ electronic configuration:

- $[ \text{Cu} ] = [ \text{Ar} ] 3d^{10} 4s^1$,
- $[ \text{Zn} ] = [ \text{Ar} ] 3d^{10} 4s^2$,
- $[ \text{Ag} ] = [ \text{Kr} ] 4d^{10} 5s^1$,
- $[ \text{Cd} ] = [ \text{Kr} ] 4d^{10} 5s^2$.

The Correct answer is: ${}^{29}\text{Cu}, {}^{30}\text{Zn}, {}^{48}\text{Cd}, {}^{47}\text{Ag}$