Electronic Configurations Of Elements And The Periodic Table

For transition metals, the electron configuration typically follows the (n-1)d^{10}ns^2 pattern. Let’s look at the electron configurations of the pairs:
- Zinc (Zn): – follows the configuration.
- Cadmium (Cd): – follows the configuration.
- Silver (Ag): – does not follow the configuration due to a single electron in the 5s orbital.
- Copper (Cu): – does not follow the configuration due to a single electron in the 4s orbital.
Thus, the pair that does not follow the typical (n-1)d^{10}ns^2 configuration is Ag and Cu.
Therefore, the correct answer is: