Electron Configuration Flashcards
what are electrons arranged in?
energy levels / principle energy levels
within electron levels what is there?
subshells which are assigned the letters S,P,D,F
what are within subshells?
how many electrons can each orbital hold?
orbitals
a maximum of 2 electrons
how many orbitals are in the sub shell “S”?
and therefore what is the max num of electrons?
1
2
how many orbitals are in the subshell “P”
and therefore what is the max num of electrons?
3
6
how many orbitals are in the subshell “D”
and therefore what is the max num of electrons?
5
10
how many orbitals in the subshell “F”
and therefore what is the max num of electrons?
7
14
which subshell is filled before 3d and why?
but what happens if an atom is ionised and needs to lose electrons?
4s because it is lower in energy
the electrons in 4s are removed first before 3d
explain the components of this
2p3
2= the energy level that the electrons are found in
p= indicates the subshell that the electrons are found
3= shows 3 electrons are found in that sublevel
what happens to electrons in the same orbital
and what spins do they have and why
they repel
they have opposite spins which reduces the repulsion between them
