`{:(,"Column I(Molecular orbital)",,"Column II (Nodal planes present,Symmetry)"), ((A),sigma_(2s),(p),"0"),((B),sigma_(2p_(z)) ,(q),"1"),((C),pi _(2p_(x))^(**),(r),"2"),((D),pi _(2p_(y))^(**) ,(s),"Gerade"):}`
(Take Z-axis as the internuclear axis)

Answer

To solve the question regarding the molecular orbitals and their corresponding nodal planes and symmetry, we will analyze each molecular orbital listed in Column I and determine the number of nodal planes and their symmetry classification.

### Step-by-Step Solution:

1. **Identify the Molecular Orbitals:**
- We have four molecular orbitals to analyze:
- (A) σ₂s
- (B) σ₂p(z)
- (C) π₂p(x)
- (D) π₂p(y)

2. **Determine the Nodal Planes and Symmetry for Each Orbital:**
- **(A) σ₂s:**
- **Nodal Planes:** The σ₂s molecular orbital has 0 nodal planes.
- **Symmetry:** Since it has 0 nodal planes, it is classified as "Gerade" (g).

- **(B) σ₂p(z):**
- **Nodal Planes:** The σ₂p(z) molecular orbital has 1 nodal plane.
- **Symmetry:** With 1 nodal plane, it is classified as "Ungerade" (u).

- **(C) π₂p(x):**
- **Nodal Planes:** The π₂p(x) molecular orbital has 1 nodal plane.
- **Symmetry:** It is classified as "Ungerade" (u).

- **(D) π₂p(y):**
- **Nodal Planes:** The π₂p(y) molecular orbital also has 1 nodal plane.
- **Symmetry:** It is classified as "Ungerade" (u).

3. **Summarize the Findings:**
- (A) σ₂s: 0 nodal planes, Gerade (g)
- (B) σ₂p(z): 1 nodal plane, Ungerade (u)
- (C) π₂p(x): 1 nodal plane, Ungerade (u)
- (D) π₂p(y): 1 nodal plane, Ungerade (u)

### Final Answers:
- (A) σ₂s: (p) "0", (s) "Gerade"
- (B) σ₂p(z): (q) "1", (r) "Ungerade"
- (C) π₂p(x): (q) "1", (r) "Ungerade"
- (D) π₂p(y): (q) "1", (r) "Ungerade"