It is not possible to explain the Pauli's exclusion principal with the help of this atom.
A
B
B
Be
C
C
D
H
Text Solution
AI Generated Solution
The correct Answer is:
To determine which atom cannot explain Pauli's Exclusion Principle, we first need to understand what the principle states.
### Step-by-Step Solution:
1. **Understanding Pauli's Exclusion Principle**:
- The Pauli's Exclusion Principle states that no two electrons in an atom can have the same set of four quantum numbers. This means that an orbital can hold a maximum of two electrons, and they must have opposite spins (one with spin +1/2 and the other with spin -1/2).
2. **Identifying the Atoms**:
- We need to analyze the electronic configurations of the given atoms: Boron (B), Beryllium (Be), Carbon (C), and Hydrogen (H).
3. **Analyzing Boron (Atomic Number 5)**:
- Electronic configuration: 1s² 2s² 2p¹
- In this configuration, there are 5 electrons. The 1s and 2s orbitals each contain 2 electrons (with opposite spins), and the 2p orbital contains 1 electron. Thus, we can explain the Pauli's Exclusion Principle for Boron.
4. **Analyzing Beryllium (Atomic Number 4)**:
- Electronic configuration: 1s² 2s²
- Beryllium has 4 electrons, both the 1s and 2s orbitals are filled with 2 electrons each (with opposite spins). Therefore, Pauli's Exclusion Principle applies here as well.
5. **Analyzing Carbon (Atomic Number 6)**:
- Electronic configuration: 1s² 2s² 2p²
- Carbon has 6 electrons. The 1s and 2s orbitals are filled with 2 electrons each (with opposite spins), and the 2p orbital has 2 electrons (which can also have opposite spins). Thus, we can explain the Pauli's Exclusion Principle for Carbon.
6. **Analyzing Hydrogen (Atomic Number 1)**:
- Electronic configuration: 1s¹
- Hydrogen has only 1 electron. Since there is only one electron present, it can have either spin +1/2 or -1/2, but there is no second electron to pair with it. Therefore, we cannot apply the Pauli's Exclusion Principle here as there is no second electron to have opposite spin.
7. **Conclusion**:
- The atom that cannot explain the Pauli's Exclusion Principle is Hydrogen.
### Final Answer:
The correct option for the question is Hydrogen.
