الجمعة، 17 مارس 2017

الجدول الذري الحديث








1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
I
II
IIIb
IVb
Vb
VIb
VIIb
VIIIb
Ib
IIb
III
IV
V
VI
VII
VIII



Lanthanoids
Actinoids
Alkali metals
Alkali earth metals
Transition metals
Other metals
Semi-metals
Non-metals
Noble gases


Li
Lithium
Li
Atomic number

3
Atomic weight
6.9412 amu
Density
0.534 g/cm3 (STP)
Melting
180.7 °C
Boiling
1317 °C
Covalent radius
1.34 Å
Van der Waals radius
1.82 Å
Ionic radius
0.76 Å
First ionization potential
5.391 eV = 43485 cm-1 = 520.2 kJ/mol
Electron affinity
-0.622 eV = -5016 cm-1 = -60.0 kJ/mol
Electronic configuration
1s22s1
Stable and very long lived isotopes
6Li: 7.5%, 7Li: 92.5%





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