Antimony Element (Periodic Table)

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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 yβ–125Te

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