1. Oxygen (O) has the maximum number of unpaired electrons, which is 2.
2. Helium (He) has the minimum number of unpaired electrons, which is 0.
3. Pauli's exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.
4. The four quantum numbers are:
- Principal quantum number (n): Represents the energy level or shell in which an electron is located.
- Azimuthal quantum number (l): Determines the shape of the electron's orbital.
- Magnetic quantum number (ml): Specifies the orientation of the orbital in space.
- Spin quantum number (ms): Describes the spin state of the electron (either +1/2 or -1/2).
5. When two electrons have the same four quantum numbers, it means that they are in the same energy level, orbital shape, spatial orientation, and spin state.
6. No two electrons can have the same four quantum numbers because of the Pauli's exclusion principle, which states that each electron in an atom must have a unique set of quantum numbers. This principle ensures that electrons occupy different energy levels and orbitals, preventing them from being in the same state.
7. The options for valid sets of quantum numbers depend on the provided choices. Without the options, it is not possible to determine which set of quantum numbers would be considered valid.
Use( O, He, Ne, C) to answer question 1-----3.
1 Which of the following atoms has the maximum number of unpaired electrons?
2. Which of the following atoms has the minimum number of unpaired electrons?
3. What is the Pauli's exclusion principle ?
4. What are the four quantum numbers?
5. What does it mean for two electrons to have the same four quantum numbers?
6. Why can no two electrons have the same four quantum numbers?
7. Which of the following sets of quantum numbers is valid?
1 answer