Electrons structure Flashcards
What is the principal quantum number?
the energy level number
What can the principle quantum number be represented as?
N
What is the formula for the maximum number of electrons in a shell?
2n^2
What are atomic orbitals?
This is a region around the nucleus can hold two electrons and have two different spins
Why do we use models to find out where an electron is?
It gives users a visual representation of where the electrons istwi likely to be
How many electrons can an orbital hold?
2
What are the 4 orbitals
S P D and F
Everything you know about S orbitals
Electron cloud with a shape of a sphere
Can hold only 1 or 2 electrons
One shell so only contains one orbital
Great number of shells = greater radius of the s orbital
Everything you know about P orbitals
Electron cloud with a shape of a dumbbell
shell so only contains three orbital
Great number of shells = greater radius of the s orbital
What is a valence electron
Electrons on the outer shell
Full configuration of Mg
1s2 2s2 2p6 3s2
How do you determine the number of valence electrons
Counting the number of s and p electrons since the most recent noble gas
Why do you fill the 4s orbital before the 3D orbital
4s orbital has a lower energy level than 3D so it has to be filled first
Aufbau Principle
States each electron occupies the lowest enemy orbital available
Pauli Exclusion Principle
Maximum of two electrons and have opposite spins
