Write the electronic configuration of Gadolinium `(Z=64)` and its most stable oxidation state .

Explanation

To find the electronic configuration of Gadolinium (Gd) with atomic number \( Z = 64 \) and its most stable oxidation state, we can follow these steps:

### Step 1: Identify the Atomic Number
Gadolinium has an atomic number of 64. This means it has 64 electrons.

### Step 2: Determine the Electron Configuration
The electron configuration of Gadolinium can be derived by filling the orbitals according to the Aufbau principle, Hund's rule, and the Pauli exclusion principle.

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