STATEMENT-1: An orbital cannot have more then two electrons and they must have opposite spins.
STATEMENT-2: No two electrojns in an atom can have same set of all the four quantum numbers as per Pauli's exclusion principle.

Options

A. If both the statement are TRUE and STATEMENT-2 is the correct explanation of STATEMENT-1
B. If both the statements are TRUE but STATEMENT-2 is NOT the correct explanation of STATEMENT-1
C. If STATEMENT-1 is TRUE and STATEMENT-2 is FALSE
D. If STATEMENT-1 is FALSE and STATEMENT-2 is TRUE

Answer

To analyze the given statements and determine their validity, we can break down the solution into clear steps:

### Step-by-Step Solution:

**Step 1: Understand Statement 1**
- Statement 1 asserts that "An orbital cannot have more than two electrons and they must have opposite spins."
- According to quantum mechanics, specifically the principles of electron configuration, each orbital can indeed hold a maximum of two electrons. Furthermore, these electrons must have opposite spins, which is a fundamental characteristic of electron pairing in orbitals.

**Step 2: Understand Statement 2**
- Statement 2 states that "No two electrons in an atom can have the same set of all four quantum numbers as per Pauli's exclusion principle."
- The Pauli Exclusion Principle is a key concept in quantum mechanics that states that no two electrons in an atom can have identical quantum numbers. The four quantum numbers are:
1. Principal quantum number (n)
2. Azimuthal quantum number (l)
3. Magnetic quantum number (m_l)
4. Spin quantum number (m_s)
- This principle ensures that electrons in the same orbital must differ in their spin quantum number, confirming that they cannot have the same set of quantum numbers.

**Step 3: Relate the Statements**
- Statement 1 is correct because it aligns with the rules of electron configuration in orbitals.
- Statement 2 is also correct as it accurately describes the Pauli Exclusion Principle.
- Furthermore, Statement 2 provides a valid explanation for Statement 1, as the limitation of two electrons per orbital with opposite spins is a direct consequence of the Pauli Exclusion Principle.

**Step 4: Conclusion**
- Both statements are true, and Statement 2 correctly explains Statement 1. Therefore, the correct answer is that both statements are true and Statement 2 is the correct explanation of Statement 1.

### Final Answer:
Both statements are true, and Statement 2 is the correct explanation of Statement 1.

---