More about the electron arrangements in atoms Flashcards
Electrons in different shells have a different amount of…
Energy
The main energy levels are divided into what?
Sub-levels
The sub-levels all have slightly different…
Energies
What are the 4 sub-levels?
S,p,d and f
The electron is no longer considered to be a partical but rather a…
Cloud of atomic charge
An electron fills a volume in space which is called?
Its atomic orbital
What do the shapes of the atomic orbitals represent?
A 95% chance of finding an electron
what orbitals does the 1st main energy level have?
One s orbital
What orbitals does the 2nd main energy level have?
One s orbital and three p orbitals
What orbitals does the 3rd main energy level have
One s orbital, three p orbitals and 5 d orbitals
How many electrons can a single atomic orbital hold?
2 maximum
p orbitals always come in groups of…
3
d orbitals always come in groups of…
5
f orbitals always come in groups of…
7
The sub-levels are divided into what?
Orbitals
How many electrons are there in an s sub-level?
2
How many electrons are there in a p sub-level?
6
How many electron she are there in a d sub level?
10
How many electrons are there in an f sub-level?
14
Draw out a diagram for the number of electrons in each levels and sub levels
Check page 15
what is spin?
Electrons have a property called spin
do two electrons in the same orbital spin the same way or different ways?
Different ways
How can you represent the different electron spin?
By showing arrows pointing up and down
Why do atomic orbitals fill singly before pairing starts?
Because electrons repel each other.
What are the 3 rules for allocating electrons to atomic orbitals?
Atomic orbitals of lower energy are filled first
Atomic orbitals of the same energy level fill singly before pairing starts.
Atomic orbitals can hold no more than two electrons
The f orbital is introduced after which element?
Vanadium
