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Why does an electron occupy the 4s orbitals before the 3rd orbital?
Wiki User
∙ 8y ago
Because the 4d electrons experience a lower effective charge from the nucleus at this point than the 5s electrons. Long story is that it has to do with the energy lost from spin-pairing. That means that it takes more energy to spin-pair the 5s electron than the energy difference between the 4d and 5s orbitals, so it will push the electron up to the 4d orbital since it requires slightly less energy. At the periods containing cromium and copper, this is where that effect takes place. You can demonstrate this to yourself by calculating the Z(eff) for the electrons using Slater's Rule, and you will see the change in Z(eff) for yourself.
Wiki User
∙ 10y ago
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What is the relative energy in the s orbital?
The relative energy of the s orbital is lower than that of the p, d, and f orbitals. In a multi-electron atom, the s orbital has a lower energy because it experiences a stronger attraction to the positive nucleus due to its spherical shape and higher electron density. Therefore, electrons are more likely to occupy the s orbital before filling higher-energy orbitals.
Pauli stated in 1925 that two electrons can occupy the same orbital only if?
All other orbitals at the sub contain at least one electron
Why do electrons occupy equal energy orbital singly before beginning to pair up in twos?
They do this before pairing up because of Hund's rule which says that the electrons occupy orbitals that have the same energy in a way that makes the number of electrons with the same spin direction as big as possible.
What is the Maximum number of electrons into 4p orbital?
An orbital can only occupy maximum of 2 electrons. As p orbital consist of 3 orbitals. And has 3 orientations. Px, Py, Pz. So as there are 3 orbitals so p orbital can occupy at the maximum 6 electrons regardless of principle quantum no.. In 4p 4 is principle quantum no. So it represent 4p represent the p orbital of 4th shell. So it also occupy at the maximum of 6 electrons.
Why does one electron in a rubidium atom occupy a 5s orbital rather than a 4d or 4f orbital?
in 5s it is filled but in 4d or 4s its half
How are electrons placed into an orbital shell?
Electrons enter the orbitals on the basis of increasing energy of sub-shells. Also, when an electron occupies an orbital another electron cannot occupy that orbital until all other orbitals of that sub-shell have atleast 1 electron.
Pauli stated in 1925 that two electrons can occupy the same orbital only if?
All other orbitals at the sub contain at least one electron
What is the relative energy in the s orbital?
The relative energy of the s orbital is lower than that of the p, d, and f orbitals. In a multi-electron atom, the s orbital has a lower energy because it experiences a stronger attraction to the positive nucleus due to its spherical shape and higher electron density. Therefore, electrons are more likely to occupy the s orbital before filling higher-energy orbitals.
How many electron can occupy an orbital?
2 at the most
What is a molecular orbital vs an atomic orbital?
according to MOT each energy level can be occupied by 2 electrons which must have opposite spins these pairs of electrons considered to occupy molecular orbital. so molecular orbital is formed from the overlap of the atomic orbitals of the atoms making up the bond.
A spherical electron cloud surrounding an atomic nucleus best represents what?
A spherical electron cloud surrounding an atomic nucleus would best represent an s orbital. A maximum of 2 electrons can occupy an orbital.
According to Hunds' rule when electrons occupy orbitals of equal energy one electron enters each orbit until?
All the orbitals contain one electron, with the same spins.
Why do electrons occupy equal energy orbital singly before beginning to pair up in twos?
They do this before pairing up because of Hund's rule which says that the electrons occupy orbitals that have the same energy in a way that makes the number of electrons with the same spin direction as big as possible.
How many electrons can occupy a single molecular orbital?
Every orbital is different. 2 can occupy the first orbital then 8 can occupy mostly the rest. When you start getting really low on the periodic table orbitals start holding 16, but not till u get really low
What is the Maximum number of electrons into 4p orbital?
An orbital can only occupy maximum of 2 electrons. As p orbital consist of 3 orbitals. And has 3 orientations. Px, Py, Pz. So as there are 3 orbitals so p orbital can occupy at the maximum 6 electrons regardless of principle quantum no.. In 4p 4 is principle quantum no. So it represent 4p represent the p orbital of 4th shell. So it also occupy at the maximum of 6 electrons.
What is the maximum number of electrons that can occupy 5d subshells?
In any shell excluding shell1, there is only 1 s orbital and 1 p orbital. Subshells and the Orbitals are same. Orbital g is known as subshell 5. g orbital is present shell 6. But till today no element is discovered with an electron in g orbital.
Why does one electron in a rubidium atom occupy a 5s orbital rather than a 4d or 4f orbital?
in 5s it is filled but in 4d or 4s its half
