Upload
ernest-briggs
View
215
Download
0
Embed Size (px)
Citation preview
n=1
n=1
n=1
n=2
n=2 n=3
Mg Mg (Z=1(Z=1
2)2)
RadiiRadiiNe=0.69 Ne=0.69
ÅÅ
Na=1.54 Na=1.54 ÅÅ
Mg=1.30 Mg=1.30 ÅÅ
Atomic Radii
Grey = Neutral Radii, Grey = Neutral Radii, Red = Cationic Radii, Blue = Anionic Radii Red = Cationic Radii, Blue = Anionic Radii
Isoelectronic SeriesIsoelectronic Series
RadiiRadiiOO2- 2- = 1.40 Å= 1.40 Å
FF--= 1.33 Å= 1.33 Å
NaNa++= 0.97 Å= 0.97 Å
MgMg2+2+= 0.66 Å= 0.66 Å
Isoelectronic atoms/ions have identical Isoelectronic atoms/ions have identical numbers of electrons.numbers of electrons.
As the nuclear charge in an isoelectronic As the nuclear charge in an isoelectronic series increases the size of the atom series increases the size of the atom
decreases.decreases.
Periodic Trends in 1st Ionization Energy
Periodic Trends in 1Periodic Trends in 1stst Ionization Ionization EnergyEnergy
C P
Se
I
Non-metals, high 1st IE
SAs
Si
Ga
Zn
Beyond 1st Ionization Energy
Electron Affinity
Properties of the Group I & II Properties of the Group I & II MetalsMetals