Chemistry · Electronic configuration of elements and extra stability of half-filled and completely filled orbitals
Electronic configuration \boldsymbol{4} \boldsymbol{d}^{10} \) belongs to:
Electronic configuration \( [\boldsymbol{K} \boldsymbol{r}] \boldsymbol{4} \boldsymbol{d}^{10} \) belongs to:
- A. Period(4) Group(10) Block(d)
- B. Period(5) Group(12) Block (d)
- C. Period(5) Group(10) Block \( (d) \)
- D. Period(4) Group(12) Block(d)
Step-by-step solution
The configuration [Kr] 4d^10 corresponds to palladium (atomic number 46). The highest principal quantum number is 5 (since the 5s orbital is part of the valence shell even if empty), placing it in period 5. The total number of electrons in (n-1)d and ns (4d and 5s) is 10, indicating group 10. The last electron enters the d subshell, so it belongs to the d-block.
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