Please enable JavaScript.
Coggle requires JavaScript to display documents.
chemistry atomic strcuture HL - Coggle Diagram
chemistry atomic strcuture HL
ionisation energy
the minimal amount of energy required to remove the electrons from the outer shell
first ionisation energy- energy required to remove one mole of electron from one mole of gaseous atom
second ionisation energy- energy required to remove one mole of positively charged ion
trends across the period
ENC increases
ESF between the neucleus and the valence electron increases
atomic radius decreases
more energy is needed to remove the valence electron
ionisation energy increases down the group
trends down the group
number of proton increases
occupied energy level increases
weaker ESF between neucleus and valence electron
less energy needed to remove electrons
why is cation smaller than anion
c occupy less number of valence shells
ENC and ESF is stronger in the cation
valence electron is closer to the radius
comparing anions
same no of protons
anions has more electrons
weaker ESF between neucleus and valence electron
valence electron is futher away from the neucleus
exemptions in the ionisation energy
the electrons are further away from the neucleus and so less energy required to remove electrons( this statement applys for all cases)