Question

Cd electrone structure

Answer 1

[Kr];4d^{10};5s^{2}

Answer 2

Cadmium (Cd) has an atomic number of 48. Following the Aufbau principle, its electrons fill orbitals in order of increasing energy. The completed core corresponds to krypton ([Kr]), and the remaining electrons occupy the 4d and 5s orbitals. Thus, the electron configuration is:

$$\text{Cd} = [Kr]\;4d^{10}\;5s^{2}$$