Question

Write the electronic configurations of Kr (Z = 36) and Xe (Z = 54).

Hint:

The noble gases, such as Kr and Xe, have completely filled p-orbitals, giving them a stable electron configuration.

Answer 1

Step 1: Electronic Configuration of Krypton (Kr).
The atomic number of Kr is 36, and its electronic configuration is: \[ \text{Kr}: [\text{Ar}] 3d^{10} 4s^{2} 4p^{6} \]
Step 2: Electronic Configuration of Xenon (Xe).
The atomic number of Xe is 54, and its electronic configuration is: \[ \text{Xe}: [\text{Kr}] 4d^{10} 5s^{2} 5p^{6} \]