The number of electrons which can be accommodated in an orbital is

Options

A. one
B. two
C. three
D. four.

Explanation

**Step-by-Step Solution:**

1. **Understanding Orbitals**: An orbital is a region in an atom where there is a high probability of finding electrons. Each orbital can hold a maximum number of electrons.

2. **Electron Spin**: Electrons have a property called spin, which can be thought of as a form of angular momentum. Each electron can have one of two possible spins: +1/2 (up spin) or -1/2 (down spin).

3. **Filling Orbitals**: According to the Pauli Exclusion Principle, no two electrons in an atom can have the same set of quantum numbers. This means that in a single orbital, you can have two electrons, but they must have opposite spins.

4. **Conclusion**: Therefore, the maximum number of electrons that can be accommodated in one orbital is 2.

5. **Final Answer**: The number of electrons which can be accommodated in an orbital is 2.

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