Electron Structure Flashcards
Second ionisation energy definition
The energy required to remove one electron from each ion in one mole of gaseous 1+ ions to form one mole of gaseous 2+ ions
First ionisation energy definition
The energy required to remove one electron from an atom in one mole of gaseous atoms to form one mole of gaseous 1+ ions
How many electrons can fill the first shell of an atom?
2
How many electrons can fill the second shell of an atom?
8
How many electrons can fill the third shell of an atom?
18
How many electrons can fill the fourth shell of an atom?
32
Atomic orbital definition
A region within an atom that can hold up to 2 electrons, with opposite spins
How many electrons can an s subshell hold?
2
How many electrons can a p subshell hold?
6
How many electrons can a d subshell hold?
10
How many electrons can an f subshell hold?
14
How many orbitals make up an s sub-shell?
1
How many orbitals make up a p sub-shell?
3
How many orbitals make up a d sub-shell?
5
Electrons occupy sub-shells in order of…
Increasing energy levels (will fill the lower energy sub-shells first)