The number of electrons in 4d-subshell of 'Pd' is 

Options

A. 7
B. 8
C. 9
D. 10

Answer

To find the number of electrons in the 4d-subshell of palladium (Pd), we can follow these steps:

### Step 1: Determine the Atomic Number of Palladium
Palladium (Pd) has an atomic number of 46. This means it has 46 electrons in its neutral state.

### Step 2: Write the Electronic Configuration
We will write the electronic configuration of palladium by filling the orbitals according to the Aufbau principle, Hund's rule, and the Pauli exclusion principle.

1. **1s**: 2 electrons
2. **2s**: 2 electrons
3. **2p**: 6 electrons
4. **3s**: 2 electrons
5. **3p**: 6 electrons
6. **4s**: 2 electrons
7. **3d**: 10 electrons
8. **4p**: 6 electrons
9. **4d**: 10 electrons (this is the subshell we are interested in)

### Step 3: Identify the Electrons in the 4d-Shell
From the electronic configuration, we see that the 4d subshell has 10 electrons.

### Conclusion
The number of electrons in the 4d-subshell of palladium (Pd) is **10**.

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