5.15 Aufbau Principle
What sublevel immediately follows the 6s sublevel?
4f
Which orbital is filled after 6s?
4f
A new electron will enter into ____ if 3d orbital is completely filled.
4p orbital
A new electron will enter into _____ if 3d orbital is completely filled.
4p orbital
Identify the orbital of the excited electron in the atom with an electron configuration of [Xe]6s^2 4f^14 5d^9 6p^1.
6p
Using the Aufbau diagram, the valence electron of lead that has the lowest energy is located in what sublevel?
6s
It can be used to describe the locations and energy levels of...
Every electron in a given atom
The electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 3d^10 describes the electron configuration of what neutral element?
Cu
The lowest energy sublevel is always the 1s sublevel, which consists of...
One orbital
What is always the lowest energy sublevel for any atom?
1s
Which Aufbau diagram describes the electron configuration of copper?
1s = two arrows; 2s - two arrows; 2p = six arrows; 3s = two arrows; 3p = six arrows; 4s = 1 arrow; 3d = ten arrows
Which of the following is the correct Aufbau diagram for phosphorus?
1s = two arrows; 2s = two arrows, 2p = six arrows; 3s = two arrows; 3p = three arrows (one in each of the three boxes)
Which of the following correctly lists the sublevels in order of increasing energy?
1s, 2s, 2p, 3s, 3p, 4s, 3d
What sublevel immediately follows the 2s sublevel according to the Aufbau Principle?
2p
What sublevel immediately follows the 3s sublevel?
3d
What sublevel immediately follows the 4s sublevel?
3d
Which orbital is filled after 4s?
3d
Which orbital is filled after 2p?
3s
The Aufbau principle states that...
An electron occupies orbitals in order from lowest energy to highest
This process of building up the atoms by adding one proton to the nucleus and one electron to the electron cloud is known as the _____.
Aufbau principle
In the ground state of atoms, orbitals are filled in decreasing order of their energies.
FALSE
In the ground state of atoms, orbits are filed in decreasing order of their energies.
FALSE
The three orbitals in a p sub-level have different energies.
FALSE
The electron configuration of an atom having atomic number 97 is [Rn]^86 6f^9 7s^2.
FALSE ([Rn]^86 5f^9 7s^2)
If two orbitals have the same (n+l) value, the orbital with the lower value of n has ____ energy and therefore it is filled first.
Lower
The Aufbau (German: "building up, construction") principle is sometimes referred to as the "building-up" principle. It is worth noting that in reality atoms are not built by adding protons and electrons one at a time and that this method is merely an aid for us to understand the end result.
N/A
The Aufbau principle states that as electrons are added to "build up" the elements, each electron is placed in the lowest energy orbital available.
TRUE
The Aufbau principle gives...
The order of electron filling in an atom