Sb - Antimony

An semi-metal. The reaction between antimony and iodine may be demonstrated in CHM 130. This reaction is characterized by a sudden and contrasting color change, but the product is very toxic.

Atomic number - 51 Density g/mL 6 .68

Atomic weight u 121 .75 Melting point K 904

Bonding radius A 1 .4 Boiling point K 1860

Atomic radius A 1 .53 Heat of vaporization kJ/mol 77 .14

Ionization Potential V 8 .641 Heat of fusion kJ/mol 19 .87

Electronegativity - 2 .05 Specific heat J/gK 0 .21

The oxide is mildly acidic.
Crystal are rhombohedral.

Electron config. : [Kr] 4d¹⁰ 5s²5p³

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

104
0.52 sec
EC,12.200 MeV
Sn-104
103.93633 105
1.3 sec
EC,3.450 MeV
Sn-105
104.93140 107

a/EC,7.900
In-103/Sn-107
106.92410 108
7.0 sec
EC,9.510 MeV
Sn-108
107.92215 109
17.0 sec
EC,6.380 MeV
Sn-109
108.91813 110
23.0 sec
EC,8.300 MeV
Sn-110
109.91676 111
75 sec
EC,5.100 MeV
Sn-111
110.91321

112
51.4 sec
EC,7.055 MeV
Sn-112
111.91239 113
6.67 min
EC,3.905 MeV
Sn-113
112.90936 114
3.49 min
EC,5.880 MeV
Sn-114
113.90909 115
32.1 min
EC,3.030 MeV
Sn-115
114.90659 116
15.8 min
EC,4.707 MeV
Sn-116
115.90679 117
2.80 hr
EC,1.757 MeV
Sn-117
116.90484 118
3.6 min
EC,3.657 MeV
Sn-118
117.90553

119
38.19 hr
EC,2.675 MeV
Sn-119
118.90394 120
15.89 min
EC,2.681 MeV
Sn-120
119.90507 120a
5.76 da
EC,2.681 MeV
Sn-120
119.90507 121 57.21%

Stable

120.90382 122
2.7238 da
B-/EC,1.979
Te-122/Sn-122
121.90517 123 42.79%

Stable

122.90421 124
60.20 da
B-,2.905 MeV
Te-124
123.90593

124a
93 sec
B-,2.916 MeV
Te-124
123.90594 125
2.7582 yr
B-,2.392 MeV
Te-125
124.90524 126
12.46 da
B-,3.670 MeV
Te-126
125.90724 126a
19.15 min
B-,3.688 MeV
Te-126
125.90726 127
3.85 da
B-,1.581 MeV
Te-127
126.90691 128
9.01 hr
B-,4.380 MeV
Te-128
127.90916 129
4.40 hr
B-,2.380 MeV
Te-129
128.90915

130
39.5 min
B-,4.960 MeV
Te-130
129.91155 131
23.03 min
B-,3.190 MeV
Te-131
130.91194 132
2.79 min
B-,5.290 MeV
Te-132
131.91420 133
2.5 min
B-,4.003 MeV
Te-133
132.91523 134
0.78 sec
B-/B-n,8.420
Te-134/Te-133
133.92057 135
1.662 sec
B-/B-n,8.120
Te-135/Te-134
134.92516 136
0.82 sec
B-/B-n,9.300
Te-136/Te-135
135.93011

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	-	51		Density	g/mL	6	.68
Atomic weight	u	121	.75	Melting point	K	904
Bonding radius	A	1	.4	Boiling point	K	1860
Atomic radius	A	1	.53	Heat of vaporization	kJ/mol	77	.14
Ionization Potential	V	8	.641	Heat of fusion	kJ/mol	19	.87
Electronegativity	-	2	.05	Specific heat	J/gK	0	.21
The oxide is mildly acidic.				Crystal are rhombohedral.
Electron config. : [Kr] 4d¹⁰ 5s²5p³
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104 0.52 sec EC,12.200 MeV Sn-104 103.93633	105 1.3 sec EC,3.450 MeV Sn-105 104.93140	107 a/EC,7.900 In-103/Sn-107 106.92410	108 7.0 sec EC,9.510 MeV Sn-108 107.92215	109 17.0 sec EC,6.380 MeV Sn-109 108.91813	110 23.0 sec EC,8.300 MeV Sn-110 109.91676	111 75 sec EC,5.100 MeV Sn-111 110.91321
112 51.4 sec EC,7.055 MeV Sn-112 111.91239	113 6.67 min EC,3.905 MeV Sn-113 112.90936	114 3.49 min EC,5.880 MeV Sn-114 113.90909	115 32.1 min EC,3.030 MeV Sn-115 114.90659	116 15.8 min EC,4.707 MeV Sn-116 115.90679	117 2.80 hr EC,1.757 MeV Sn-117 116.90484	118 3.6 min EC,3.657 MeV Sn-118 117.90553
119 38.19 hr EC,2.675 MeV Sn-119 118.90394	120 15.89 min EC,2.681 MeV Sn-120 119.90507	120a 5.76 da EC,2.681 MeV Sn-120 119.90507	121 57.21% Stable 120.90382	122 2.7238 da B-/EC,1.979 Te-122/Sn-122 121.90517	123 42.79% Stable 122.90421	124 60.20 da B-,2.905 MeV Te-124 123.90593
124a 93 sec B-,2.916 MeV Te-124 123.90594	125 2.7582 yr B-,2.392 MeV Te-125 124.90524	126 12.46 da B-,3.670 MeV Te-126 125.90724	126a 19.15 min B-,3.688 MeV Te-126 125.90726	127 3.85 da B-,1.581 MeV Te-127 126.90691	128 9.01 hr B-,4.380 MeV Te-128 127.90916	129 4.40 hr B-,2.380 MeV Te-129 128.90915
130 39.5 min B-,4.960 MeV Te-130 129.91155	131 23.03 min B-,3.190 MeV Te-131 130.91194	132 2.79 min B-,5.290 MeV Te-132 131.91420	133 2.5 min B-,4.003 MeV Te-133 132.91523	134 0.78 sec B-/B-n,8.420 Te-134/Te-133 133.92057	135 1.662 sec B-/B-n,8.120 Te-135/Te-134 134.92516	136 0.82 sec B-/B-n,9.300 Te-136/Te-135 135.93011
MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass