Ga - Gallium

Gallium was discovered by Lecoq de Boisbaudrain in 1875 in Paris.

Atomic number - 31 Density g/mL 5 .91

Atomic weight u 69 .72 Melting point K 302 .9

Bonding radius A 1 .26 Boiling point K 2478

Atomic radius A 1 .81 Heat of vaporization kJ/mol 258 .7

Ionization Potential V 5 .999 Heat of fusion kJ/mol 5 .59

Electronegativity - 1 .81 Specific heat J/gK 0 .37

The oxide is amphoteric.
Crystal are orthorhombic.

Electron config. : [Ar] 3d¹⁰ 4s² 4p¹

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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 Ga: Click mass number for decay process, product for element page.

061
0.15 sec
EC,9.000 MeV
Zn-61
60.949167 062
116.12 msec
EC,9.170 MeV
Zn-62
61.944175 063
32.4 sec
EC,5.520 MeV
Zn-63
62.939140 064
2.627 min
EC,7.165 MeV
Zn-64
63.936838 065
15.2 min
EC,3.255 MeV
Zn-65
64.932738 066
9.49 hr
EC,5.175 MeV
Zn-66
65.931591 067
3.2612 da
EC,1.000 MeV
Zn-67
66.928204

068
67.629 min
EC,2.921 MeV
Zn-68
67.927983 069 60.108%

Stable

68.925580 070
21.14 min
B-/EC,1.656
Ge-70/Zn-70
69.926027 071 39.892%

Stable

70.924707 072
14.10 hr
B-,4.001 MeV
Ge-72
71.926371 073
4.86 hr
B-,1.593 MeV
Ge-73
72.925169 074
8.12 min
B-,5.370 MeV
Ge-74
73.926945

075
126 sec
B-,3.392 MeV
Ge-75
74.926500 076
32.6 sec
B-,7.010 MeV
Ge-76
75.928931 077
13.2 sec
B-,5.340 MeV
Ge-77
76.929285 078
5.09 sec
B-,8.200 MeV
Ge-78
77.931658 079
2.847 sec
B-/B-n,7.000
Ge-79/Ge-78
78.932914 080
1.697 sec
B-/B-n,10.380
Ge-80/Ge-79
79.936585 081
1.217 sec
B-/B-n,8.320
Ge-81/Ge-80
80.937755

082
0.599 sec
B-/B-n,12.700
Ge-82/Ge-81
81.943209 083
0.31 sec
B-/B-n,11.500
Ge-83/Ge-82
82.946859 084
85 msec
B-/B-n,8.500
Ge-84/Ge-83
83.952334 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	-	31		Density	g/mL	5	.91
Atomic weight	u	69	.72	Melting point	K	302	.9
Bonding radius	A	1	.26	Boiling point	K	2478
Atomic radius	A	1	.81	Heat of vaporization	kJ/mol	258	.7
Ionization Potential	V	5	.999	Heat of fusion	kJ/mol	5	.59
Electronegativity	-	1	.81	Specific heat	J/gK	0	.37
The oxide is amphoteric.				Crystal are orthorhombic.
Electron config. : [Ar] 3d¹⁰ 4s² 4p¹
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061 0.15 sec EC,9.000 MeV Zn-61 60.949167	062 116.12 msec EC,9.170 MeV Zn-62 61.944175	063 32.4 sec EC,5.520 MeV Zn-63 62.939140	064 2.627 min EC,7.165 MeV Zn-64 63.936838	065 15.2 min EC,3.255 MeV Zn-65 64.932738	066 9.49 hr EC,5.175 MeV Zn-66 65.931591	067 3.2612 da EC,1.000 MeV Zn-67 66.928204
068 67.629 min EC,2.921 MeV Zn-68 67.927983	069 60.108% Stable 68.925580	070 21.14 min B-/EC,1.656 Ge-70/Zn-70 69.926027	071 39.892% Stable 70.924707	072 14.10 hr B-,4.001 MeV Ge-72 71.926371	073 4.86 hr B-,1.593 MeV Ge-73 72.925169	074 8.12 min B-,5.370 MeV Ge-74 73.926945
075 126 sec B-,3.392 MeV Ge-75 74.926500	076 32.6 sec B-,7.010 MeV Ge-76 75.928931	077 13.2 sec B-,5.340 MeV Ge-77 76.929285	078 5.09 sec B-,8.200 MeV Ge-78 77.931658	079 2.847 sec B-/B-n,7.000 Ge-79/Ge-78 78.932914	080 1.697 sec B-/B-n,10.380 Ge-80/Ge-79 79.936585	081 1.217 sec B-/B-n,8.320 Ge-81/Ge-80 80.937755
082 0.599 sec B-/B-n,12.700 Ge-82/Ge-81 81.943209	083 0.31 sec B-/B-n,11.500 Ge-83/Ge-82 82.946859	084 85 msec B-/B-n,8.500 Ge-84/Ge-83 83.952334	MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass