What is Electron Configuration?
The arrangement of electrons in an atom or ion.
What is the Aufbau principle?
States that electrons fill the orbitals with the lowest energy state before filling the orbitals with higher energy states.
In an ion which sub shell empties first - 4s2 or 3d10?
4s2
How is Sub-shell notation broken down?
First number - energy level
Letter - subshell
Superscript number - number of electrons
What happens to the energy in a shell as the shell number increases?
It increases.
What is the energy level called?
The principal quantum number n
How many electrons are in each energy level?
(N squared) *2
What are the four types of sub shell?
S,p,d,f (each has a different energy)
What are subshells made from?
Orbitals - a region of space around the nucleus of an atom that can hold up to two electrons with different spins.
What is the shape of a s orbital?
It is spherical and can hold 2 electrons.
What is the shape of a p orbital?
A dumb bell shape
How many s orbitals are present in one s subshell?
One
How many p orbitals are present in one p subshell?
3
How many d orbitals are present in one d subshell?
5
How many f orbitals are present in one f subshell?
7
