`3p_(y)` orbital has ……… nodal plane:

Options

A. `XY`
B. `YZ`
C. `ZX`
D. All of these

Answer

To determine the number of nodal planes in a 3p_y orbital, we can follow these steps:

### Step 1: Understand the p orbital structure
- The p orbitals (px, py, pz) are characterized by having a dumbbell shape with two lobes. Each p orbital has one nodal plane.

### Step 2: Identify the specific orbital
- In this case, we are specifically looking at the 3p_y orbital. The "3" indicates that it is in the third energy level, and the "y" indicates the orientation of the orbital along the y-axis.

### Step 3: Determine the nodal plane
- For p orbitals, the nodal plane is the plane where the probability of finding an electron is zero. For the 3p_y orbital, the nodal plane is the plane that bisects the lobes of the orbital.
- In this case, the nodal plane for the 3p_y orbital is the xz-plane, which means that there is no electron density in this plane.

### Step 4: Count the nodal planes
- Since each p orbital has one nodal plane, the 3p_y orbital also has one nodal plane.

### Conclusion
- Therefore, the 3p_y orbital has **1 nodal plane**.

---