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This is the Pauli exclusion principle. Wolfgang Pauli was a Jewish physicist, Nobel prize laureate.

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The Pauli exclusion principle. See related link.

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It is the Pauli exclusion principle.

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Pauli exclusion principle.

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paul exclusion principle

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The Pauli exclusion principle.

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The Pauli Exclusion Principle.

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Q: What rule or principle states that no two electrons in the same orbital can have the same spin?
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What is the electron filling rule that states that any electronic orbital must be filled by 2 electrons of opposite spin?

the pauli exclusion principle


Which rule explicticly states that each orbital of an atom can fit two electrons in oppsite spins?

Hund's rule: "Two electrons cannot share the same set of quantum numbers within the same system." There is room for only two electrons in each spatial orbital (according to Pauli exclusion principle, mentioned in question).


Hund's rule states that an orbital can contain two electrons only if?

all other orbitals at that sublevel contain at least one electron (plato :P)


What are the three rules thar govern the filling of atomic orbitals by electrons?

1 type s orbital → max 2 electrons 3 type p orbitals → max 6 electrons 5 type d orbitals → max 10 electrons 7 type f orbitals → max 14 electrons 9 type g orbitals → max 18 electrons [edit] Aufbau principle In the ground state of an atom (the condition in which it is ordinarily found), the electron configuration generally follows the Aufbau principle. According to this principle, electrons enter into states in order of the states' increasing energy; i.e., the first electron goes into the lowest-energy state, the second into the next lowest, and so on. A pair of electrons with identical spins has slightly less energy than a pair of electrons with opposite spins. Since two electrons in the same orbital must have opposite spins, this causes electrons to prefer to occupy different orbitals. This preference manifests itself if a subshell with l > 0 (one that contains more than one orbital) is less than full. For instance, if a p subshell contains four electrons, two electrons will be forced to occupy one orbital, but the other two electrons will occupy both of the other orbitals, and their spins will be equal. This phenomenon is called Hund's rule. Hund's rules Hund's rules, (occasionally called the "bus seat rule") refer to a simple set of rules used to determine which is the term symbol that corresponds to the ground state of a multi-electron atom. They are named in honour of Friedrich Hund who contributed Hund's Rule, rule two as listed here. The four rules are: 1. Electrons can occupy energy levels only above the 2s orbital total orbital. 2. The term with maximum multiplicity (maximum ) has the lowest energy level. 3. For a given multiplicity, the term with the largest value of has the lowest energy in an orbital. 4. For atoms with less than half-filled shells, the level with the lowest value of lies lowest in energy. Otherwise, if the outermost shell is more than half-filled, the term with highest value of is the one with the lowest energy.


What determines an energy level?

Electron configuration is the arrangement of electrons in an atom, which is prescribed by three rules - the aufbau principle, the Pauli exclusion principle, and Hund's rule. (1) aufbau principle - States that each elcetron occupies the lowest energy orbital available. (2) Pauli exclusion principle - States that a maximum of two electrons may occupy a single atomic orbital, but omly if the electrons have opposite spins. (3) Hund's rule - States that single electrons with the same spin must occupy each equl-energy orbital before additional electrons with pposite spins can occupy the same orbitals.


Whose rule or principle delineates the placement of additional electrons in the unfilled orbital of lowest energy?

The orbital that will result in the most stable configuration, i.e., the one with the highest first ionization energy, in the resulting atom will be filled first.


What is the spin of the electrons in the same orbital must be paired?

That depends on the number of electrons and protons


What is the most stable outer orbital arrangement of electrons after a chemical reaction?

The most stable outer orbital arrangement of electrons after a chemical reaction is 8 electrons. This is referred to as the octet rule in representative elements.


May two electrons occupy the same space orbital in an atom?

Two electrons can occupy the same space orbital in an atom if they have different spins. This is known as Hund's Rule.


Who hypothesized that only two electrons can occupy an orbital?

The bottom-line answer is because that is how nature works! However, there are somewhat less profound explanations, but they are really just rules which say that this must happen -- and don't ultimately answer "Why?". The Pauli Exclusion Principle says that all electrons in an atom must have four unique quantum numbers -- no two can have all four the same. This rule forbids more than 2 electrons existing in the same orbital because there are two possible quantum numbers available for that orbital -- electron spin of +1/2 and -1/2. But again, this rule just says that there can't be more than 2 electrons per orbital because of the uniqueness of quantum numbers -- but it doesn't say why quantum numbers must be unique! In the end, it really just is the way it because that's the way it is!


What is the maximum number of electrons in the fourth orbita?

the rule is 2n² so there are 2*4²= 32 electrons in the fourth orbital


What is the theory that within a sub level electrons prefer to occupy their own orbital?

Hund's Rule