I - Iodine

The solid halogen was discovered in 1811 by Bernard Courtois in seaweed.

Atomic number - 53 Density g/mL 4 .92

Atomic weight u 126 .9045 Melting point K 386 .7

Bonding radius A 1 .33 Boiling point K 458 .4

Atomic radius A 1 .32 Heat of vaporization kJ/mol 20 .752

Ionization Potential V 10 .451 Heat of fusion kJ/mol 7 .824

Electronegativity - 2 .66 Specific heat J/gK 0 .214

The oxide is a strong acid.
Crystal are orthorhombic.

Electron config. : [Kr] 4d¹⁰ 5s² 5p⁵

Isotopes of I: Click mass number for decay process, product for element page.

108
36 msec
a,4.030 MeV
Sb-104
107.94353 109
100 usec
p,3.230 MeV
Te-108
108.93819 110
0.65 sec
a/EC/ECa/ECp,11.900
Sb-106/Te-110/Sn-106/Sb-109
109.93526 111
2.5 sec
a/EC,8.500
Sb-107/Te-111
110.93032 112
3.42 sec
a/EC,10.200
Sb-108/Te-112
111.92796 113
6.6 sec
a/EC,7.200
Sb-109/Te-113
112.92364 114
2.1 sec
EC/ECp,9.100
Te-114/Sb-113
113.92184

115
1.3 min
EC,5.900 MeV
Te-115
114.91787 116
2.91 sec
EC,7.750 MeV
Te-116
115.91673 117
2.22 min
EC,4.670 MeV
Te-117
116.91364 118
13.7 min
EC,7.040 MeV
Te-118
117.91339 119
19.1 min
EC,3.510 MeV
Te-119
118.91017 120
81.0 min
EC,5.615 MeV
Te-120
119.91005 121
2.12 hr
EC,2.270 MeV
Te-121
120.90737

122
3.63 min
EC,4.234 MeV
Te-122
121.90760 123
13.27 hr
EC,1.242 MeV
Te-123
122.90560 124
4.1760 da
EC,3.160 MeV
Te-124
123.90621 125
59.408 da
EC,2.392 MeV
Te-125
124.90462 126
13.11 da
B-/EC,2.155
Xe-126/Te-126
125.90561 127 100%

Stable

126.90446 128
24.99 min
B-/EC,2.118
Xe-128/Te-128
127.90580

129
1.57E+7 yr
B-,1.604 MeV
Xe-129
128.90498 130
12.36 hr
B-,2.949 MeV
Xe-130
129.90667 131
8.02070 da
B-,2.415 MeV
Xe-131
130.90612 132
2.295 hr
B-,3.577 MeV
Xe-132
131.90799 133
20.8 hr
B-,1.770 MeV
Xe-133
132.90780 134
52.5 min
B-,4.170 MeV
Xe-134
133.90987 135
6.57 hr
B-,2.648 MeV
Xe-135
134.91005

136
83.4 sec
B-,6.930 MeV
Xe-136
135.91465 137
24.5 sec
B-/B-n,5.880
Xe-137/Xe-136
136.91787 138
6.49 sec
B-/B-n,7.820
Xe-138/Xe-137
137.92238 139
2.280 sec
B-/B-n,6.806
Xe-139/Xe-138
138.92609 140
0.86 sec
B-/B-n,8.760
Xe-140/Xe-139
139.93103 141
0.43 sec
B-/B-n,7.800
Xe-141/Xe-140
140.93505 142
0.2 sec
B-,6.150 MeV
Xe-142
142.0

MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass

Atomic number	-	53		Density	g/mL	4	.92
Atomic weight	u	126	.9045	Melting point	K	386	.7
Bonding radius	A	1	.33	Boiling point	K	458	.4
Atomic radius	A	1	.32	Heat of vaporization	kJ/mol	20	.752
Ionization Potential	V	10	.451	Heat of fusion	kJ/mol	7	.824
Electronegativity	-	2	.66	Specific heat	J/gK	0	.214
The oxide is a strong acid.				Crystal are orthorhombic.
Electron config. : [Kr] 4d¹⁰ 5s² 5p⁵

108 36 msec a,4.030 MeV Sb-104 107.94353	109 100 usec p,3.230 MeV Te-108 108.93819	110 0.65 sec a/EC/ECa/ECp,11.900 Sb-106/Te-110/Sn-106/Sb-109 109.93526	111 2.5 sec a/EC,8.500 Sb-107/Te-111 110.93032	112 3.42 sec a/EC,10.200 Sb-108/Te-112 111.92796	113 6.6 sec a/EC,7.200 Sb-109/Te-113 112.92364	114 2.1 sec EC/ECp,9.100 Te-114/Sb-113 113.92184
115 1.3 min EC,5.900 MeV Te-115 114.91787	116 2.91 sec EC,7.750 MeV Te-116 115.91673	117 2.22 min EC,4.670 MeV Te-117 116.91364	118 13.7 min EC,7.040 MeV Te-118 117.91339	119 19.1 min EC,3.510 MeV Te-119 118.91017	120 81.0 min EC,5.615 MeV Te-120 119.91005	121 2.12 hr EC,2.270 MeV Te-121 120.90737
122 3.63 min EC,4.234 MeV Te-122 121.90760	123 13.27 hr EC,1.242 MeV Te-123 122.90560	124 4.1760 da EC,3.160 MeV Te-124 123.90621	125 59.408 da EC,2.392 MeV Te-125 124.90462	126 13.11 da B-/EC,2.155 Xe-126/Te-126 125.90561	127 100% Stable 126.90446	128 24.99 min B-/EC,2.118 Xe-128/Te-128 127.90580
129 1.57E+7 yr B-,1.604 MeV Xe-129 128.90498	130 12.36 hr B-,2.949 MeV Xe-130 129.90667	131 8.02070 da B-,2.415 MeV Xe-131 130.90612	132 2.295 hr B-,3.577 MeV Xe-132 131.90799	133 20.8 hr B-,1.770 MeV Xe-133 132.90780	134 52.5 min B-,4.170 MeV Xe-134 133.90987	135 6.57 hr B-,2.648 MeV Xe-135 134.91005
136 83.4 sec B-,6.930 MeV Xe-136 135.91465	137 24.5 sec B-/B-n,5.880 Xe-137/Xe-136 136.91787	138 6.49 sec B-/B-n,7.820 Xe-138/Xe-137 137.92238	139 2.280 sec B-/B-n,6.806 Xe-139/Xe-138 138.92609	140 0.86 sec B-/B-n,8.760 Xe-140/Xe-139 139.93103	141 0.43 sec B-/B-n,7.800 Xe-141/Xe-140 140.93505	142 0.2 sec B-,6.150 MeV Xe-142 142.0
MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass