Ge - Germanium

Germanium, discovered by Winkler in 1886 is used in semiconductors.

Atomic number - 32 Density g/mL 5 .32

Atomic weight u 72 .59 Melting point K 1210 .4

Bonding radius A 1 .22 Boiling point K 3107

Atomic radius A 1 .52 Heat of vaporization kJ/mol 330 .9

Ionization Potential V 7 .899 Heat of fusion kJ/mol 36 .94

Electronegativity - 2 .01 Specific heat J/gK 0 .32

The oxide is amphoteric.
Crystal are face centered cubic.

Electron config. : [Ar] 3d¹⁰ 4s²4p²

Top | About | Search | Comment | PC Chemistry

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

H He

Li Be B C N O F Ne

Na Mg Al Si P S Cl Ar

K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr

Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn

Fr Ra Ac** Rf Db Sg Bh Hs Mt 110 111 112 113

Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

Isotopes of Ge: Click mass number for decay process, product for element page.

061
40 msec
EC/ECp,13.600
Ga-61/Zn-60
60.963821 062
0.11 sec
EC,9.750 MeV
Ga-62
61.954653 063
0.095 sec
EC,9.780 MeV
Ga-63
62.949640 064
63.7 sec
EC,4.410 MeV
Ga-64
63.941577 065
30.9 sec
EC,6.240 MeV
Ga-65
64.939441 066
2.26 hr
EC,2.100 MeV
Ga-66
65.933848 067
18.9 min
EC,4.223 MeV
Ga-67
66.932738

068
270.8 da
EC,2.921 MeV
Ga-68
67.928097 069
39.05 hr
EC,2.227 MeV
Ga-69
68.927971 070 21.23%

Stable

69.924249 071
11.43 da
EC,2.971 MeV
Ga-71
70.924953 072 27.66%

Stable

71.922076 073 7.73%

Stable

72.923459 074 35.94%

Stable

73.921178

075
82.78 min
B-,1.176 MeV
As-75
74.922859 076 7.44%

Stable

75.921402 077
11.30 hr
B-,2.702 MeV
As-77
76.923548 077a
52.9 sec
B-,2.862 MeV
As-77
76.923720 078
88.0 min
B-,8.200 MeV
As-78
77.922852 079
18.98 sec
B-,4.150 MeV
As-79
78.925399 080
29.5 sec
B-,2.670 MeV
As-80
79.925444

081
7.6 sec
B-,6.230 MeV
As-81
80.928824 082
4.60 sec
B-,4.700 MeV
As-82
81.929554 083
1.85 sec
B-,8.900 MeV
As-83
82.934513 084
0.947 sec
B-/B-n,7.700
As-84/As-83
83.937305 085
0.54 sec
B-/B-n,4.600
As-85/As-84
84.942672 MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass

Updated by clh on 2/6/98. This is not a publication of Phoenix College.

Atomic number	-	32		Density	g/mL	5	.32
Atomic weight	u	72	.59	Melting point	K	1210	.4
Bonding radius	A	1	.22	Boiling point	K	3107
Atomic radius	A	1	.52	Heat of vaporization	kJ/mol	330	.9
Ionization Potential	V	7	.899	Heat of fusion	kJ/mol	36	.94
Electronegativity	-	2	.01	Specific heat	J/gK	0	.32
The oxide is amphoteric.				Crystal are face centered cubic.
Electron config. : [Ar] 3d¹⁰ 4s²4p²
**Top \| About \| Search \| Comment \| PC Chemistry**

061 40 msec EC/ECp,13.600 Ga-61/Zn-60 60.963821	062 0.11 sec EC,9.750 MeV Ga-62 61.954653	063 0.095 sec EC,9.780 MeV Ga-63 62.949640	064 63.7 sec EC,4.410 MeV Ga-64 63.941577	065 30.9 sec EC,6.240 MeV Ga-65 64.939441	066 2.26 hr EC,2.100 MeV Ga-66 65.933848	067 18.9 min EC,4.223 MeV Ga-67 66.932738
068 270.8 da EC,2.921 MeV Ga-68 67.928097	069 39.05 hr EC,2.227 MeV Ga-69 68.927971	070 21.23% Stable 69.924249	071 11.43 da EC,2.971 MeV Ga-71 70.924953	072 27.66% Stable 71.922076	073 7.73% Stable 72.923459	074 35.94% Stable 73.921178
075 82.78 min B-,1.176 MeV As-75 74.922859	076 7.44% Stable 75.921402	077 11.30 hr B-,2.702 MeV As-77 76.923548	077a 52.9 sec B-,2.862 MeV As-77 76.923720	078 88.0 min B-,8.200 MeV As-78 77.922852	079 18.98 sec B-,4.150 MeV As-79 78.925399	080 29.5 sec B-,2.670 MeV As-80 79.925444
081 7.6 sec B-,6.230 MeV As-81 80.928824	082 4.60 sec B-,4.700 MeV As-82 81.929554	083 1.85 sec B-,8.900 MeV As-83 82.934513	084 0.947 sec B-/B-n,7.700 As-84/As-83 83.937305	085 0.54 sec B-/B-n,4.600 As-85/As-84 84.942672	MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass