Gallium Element (Periodic Table)

Gallium

Gallium (Ga) is a chemical element of the periodic table, located in the group 13 and the period 4, and is having the atomic number 31. It is a soft, silvery-white post transition metal, whose name comes from the Latin word “Gallia”, which means France, homeland of the discoverer. It is a member of the boron group.

group
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
period
1
1
H
2
He
2
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
3
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
4
19
K
20
Ca
21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
5
37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
6
55
Cs
56
Ba
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
7
87
Fr
88
Ra
104
Rf
105
Db
106
Sg
107
Bh
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Nh
114
Fl
115
Mc
116
Lv
117
Ts
118
Og
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
71
Lu
89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No
103
Lr
– p block

FAQs on Gallium Element

Gallium
‣ What does gallium look like?

Appearance: silvery blue
‣ Who discovered gallium? When was gallium discovered?

Prediction: Dmitri Mendeleev (1871)
Discovery and first isolation: Lecoq de Boisbaudran (1875)
‣ Where is gallium found on the periodic table?

Gallium Periodic Table

Location: Gallium is found in the fourth row of the periodic table below the aluminium element.
‣ What is the atomic number of gallium?

Atomic number (Z): 31
‣ What is the symbol of gallium?

Symbol: Ga
‣ What is the atomic weight of gallium?

Standard atomic weight: 69.723
‣ What block does gallium belong to?

Block: p-block
‣ What group is gallium in on the periodic table?

Group: 13 (boron group)
‣ What period is gallium in the periodic table?

Period: 4
‣ What is the atomic radius of gallium?

Atomic radius: empirical: 135 pm
Gallium covalent radius: 122±3 pm
Gallium Van der Waals radius: 187 pm
‣ What is gallium’s melting point?

Melting point: 302.9146 K (29.7646 °C, 85.5763 °F)
‣ What is the boiling point of gallium?

Boiling point: 2673 K (2400 °C, 4352 °F)
‣ How many electron shells does gallium have?

Electrons per shell: 2, 8, 18, 3
‣ What is the electron configuration of gallium?

Electron configuration: [Ar] 3d10 4s2 4p1
‣ What is gallium ionization energy?

Ionization energies:
1st: 578.8 kJ/mol
2nd: 1979.3 kJ/mol
3rd: 2963 kJ/mol
‣ What is the phase of gallium?

Phase (at r.t): solid
‣ What is the density of gallium?

Density (near r.t): 5.91 g/cm3
when liquid (at m.p): 6.095 g/cm3
Gallium magnetic ordering: diamagnetic
Gallium natural occurrence: primordial
Gallium oxidation state: +3
‣ What’s the electronegativity of gallium?

Electronegativity: Pauling scale: 1.81
Gallium poisson’s ratio: 0.47
Gallium heat of fusion: 5.59 kJ/mol
Gallium heat of vaporization: 256 kJ/mol
Gallium molar heat capacity: 25.86 J/(mol K)
Gallium molar magnetic susceptibility: -21.6 × 10-6 cm3/mol (at 290 K)
Speed of sound in gallium: 2740 m/s (at 20 °C)
‣ What is the crystal structure of gallium?

Crystal structure: orthorhombic
Thermal expansion of gallium: 18 µm/(m.K) (at 25 °C)
Thermal conductivity of gallium: 40.6 W/(m.K)
Gallium electrical resistivity: 270 nΩ.m (at 20 °C)
‣ Gallium hardness

Mohs hardness: 1.5
Brinell hardness: 56.8-68.7 MPa
Young’s modulus of gallium: 9.8 GPa
Gallium CAS number: 7440-55-3

‣ Gallium vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)131014481620183821252518

‣ How many isotopes does gallium have?

Main isotopes of gallium
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
66Gasyn9.5 hβ+66Zn
67Gasyn3.3 dε67Zn
68Gasyn1.2 hβ+68Zn
69Ga60.11 %stable
70Gasyn21 minβ
ε
70Ge
70Zn
71Ga39.89 %stable
72Gasyn14.1 hβ72Ge
73Gasyn4.9 hβ73Ge

.
.
.

Related:

Also Read:

Leave a Comment