Antimony Element (Periodic Table)

Antimony

Antimony (Sb) is a chemical element of the periodic table, located in the group 15 and the period 5, and is having the atomic number 51. It is a hard, brittle, lustrous, silvery-grey metalloid, whose name comes from the Greek word “anti-monos”, which means not alone. It is a member of the pnictogen 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 Antimony Element

Antimony
‣ What does antimony look like?

Appearance: silvery lustrous grey
‣ When was antimony discovered and by whom?

Discovery: Arabic alchemists (before AD 815)
‣ Where is antimony found on the periodic table?

Antimony Periodic Table

Location: Antimony is found in the fifth row of the periodic table below the arsenic element.
‣ What is the atomic number of antimony?

Atomic number (Z): 51
‣ What is antimony’s symbol?

Symbol: Sb
‣ What is the atomic weight for antimony?

Standard atomic weight: 121.760
‣ What block does antimony belong to?

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

Group: 15 (pnictogens)
‣ What period is antimony in on the periodic table?

Period: 5
Antimony atomic radius: empirical: 140 pm
Antimony covalent radius: 139±5 pm
Antimony Van der Waals radius: 206 pm
‣ What is the melting point of antimony?

Melting point: 903.78 K (630.63 °C, 1167.13 °F)
‣ What is antimony boiling point?

Boiling point: 1908 K (1635 °C, 2975 °F)
‣ How many electron shells does antimony have?

Electrons per shell: 2, 8, 18, 18, 5
‣ What’s the electron configuration of antimony?

Electron configuration: [Kr] 4d10 5s2 3p3
‣ What is the ionization energy of antimony?

Ionization energies:
1st: 834 kJ/mol
2nd: 1594.9 kJ/mol
3rd: 2440 kJ/mol
‣ What is the phase of antimony?

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

Density (near r.t): 6.697 g/cm3
when liquid (at m.p): 6.53 g/cm3
Antimony magnetic ordering: diamagnetic
Antimony natural occurrence: primordial
Antimony oxidation state: -3, +3, +5
Antimony electronegativity: Pauling scale: 2.05
Antimony heat of fusion: 19.79 kJ/mol
Antimony heat of vaporization: 193.43 kJ/mol
Antimony molar heat capacity: 25.23 J/(mol K)
Antimony molar magnetic susceptibility: -99.0 × 10-6 cm3/mol
Speed of sound in antimony: 3420 m/s (at 20 °C)
Antimony crystal structure: rhombohedral
Thermal expansion of antimony: 11 µm/(m.K) (at 25 °C)
Thermal conductivity of antimony: 24.4 W/(m.K)
Antimony electrical resistivity: 417 nΩ.m (at 20 °C)
‣ What is the hardness of antimony?

Mohs hardness: 3.0
Brinell hardness: 294-384 MPa
Young’s modulus of antimony: 55 GPa
Shear modulus of antimony: 20 GPa
Bulk modulus of antimony: 42 GPa
Antimony CAS number: 7440-36-0

‣ Antimony vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)8078761011121914911858

‣ How many isotopes does antimony have?

Main isotopes of antimony
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
121Sb57.21 %stable
123Sb42.79 %stable
125Sbsyn2.7582 yβ125Te

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