Xe - Xenon

Xenon from Greek's word for stranger, is a rare gas that was extracted from the atmosphere (along with neon, krypton and radon.) by William Ramsey and M. W. Travers in 1898. Xenon is not an inert element - a hydrate, oxide and several fluorides have been prepared.

Atomic number - 54 Density g/mL 5 .89

Atomic weight u 131 .3 Melting point K 161 .36

Bonding radius A 1 .31 Boiling point K 165 .03

Atomic radius A 1 .24 Heat of vaporization kJ/mol 12 .636

Ionization Potential V 12 .13 Heat of fusion kJ/mol 2 .297

Electronegativity - - Specific heat J/gK 0 .158

The oxide is a weak acid.
Crystal are face centered cubic.

Electron config. : [Kr] 4d¹⁰ 5s² 5p⁶

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

110

a,3.886 MeV
Te-106
109.94449 111
0.74 sec
a/EC,3.720
Te-107/I-111
110.94159 112
2.7 sec
a/EC,7.200
Te-108/I-112
111.93566 113
2.74 sec
a/EC/ECp,9.060
Te-109/I-113/Te-112
112.93337 114
10.0 sec
EC,5.900 MeV
I-114
113.92814 115
18 sec
EC/ECp,8.000
I-115/Te-114
114.92652 116
59 sec
EC,4.660 MeV
I-116
115.92172

117
61 sec
EC/ECp,6.440
I-117/Te-116
116.92056 118
3.8 min
EC,2.900 MeV
I-118
117.91658 119
5.8 min
EC,5.000 MeV
I-119
118.91555 120
40 min
EC,1.960 MeV
I-120
119.91216 121
40.1 min
EC,3.730 MeV
I-121
120.91137 122
20.1 hr
EC,4.234 MeV
I-122
121.90856 123
2.08 hr
EC,2.676 MeV
I-123
122.90847

124 0.10%

Stable

123.90589 125
16.9 hr
EC,1.652 MeV
I-125
124.90639 126 0.09%

Stable

125.90426 127
36.4 da
EC,1.581 MeV
I-127
126.90517 128 1.91%

Stable

127.90353 129 26.4%

Stable

128.90477 130 4.1%

Stable

129.90350

131 21.2%

Stable

130.90508 132 26.9%

Stable

131.90415 133
5.243 da
B-,1.634 MeV
Cs-133
132.90590 134 10.4%

Stable

133.90539 135
9.14 hr
B-,1.151 MeV
Cs-135
134.90720 136 8.9%
9.3E+19 yr
2B-,7.570 MeV
Ba-136
135.90722 137
3.818 min
B-,4.172 MeV
Cs-137
136.91156

138
14.08 min
B-,2.770 MeV
Cs-138
137.91398 139
39.68 sec
B-,5.057 MeV
Cs-139
138.91878 140
13.60 sec
B-,4.060 MeV
Cs-140
139.92163 141
1.73 sec
B-/B-n,6.150
Cs-141/Cs-140
140.92665 142
1.24 sec
B-/B-n,5.040
Cs-142/Cs-141
141.92970 143
0.30 sec
B-,7.310 MeV
Cs-143
142.93515 144
1.15 sec
B-,6.100 MeV
Cs-144
143.93848

145
0.9 sec
B-/B-n,6.100
Cs-145/Cs-144
145.0 MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass

Atomic number	-	54		Density	g/mL	5	.89
Atomic weight	u	131	.3	Melting point	K	161	.36
Bonding radius	A	1	.31	Boiling point	K	165	.03
Atomic radius	A	1	.24	Heat of vaporization	kJ/mol	12	.636
Ionization Potential	V	12	.13	Heat of fusion	kJ/mol	2	.297
Electronegativity	-	-		Specific heat	J/gK	0	.158
The oxide is a weak acid.				Crystal are face centered cubic.
Electron config. : [Kr] 4d¹⁰ 5s² 5p⁶

110 a,3.886 MeV Te-106 109.94449	111 0.74 sec a/EC,3.720 Te-107/I-111 110.94159	112 2.7 sec a/EC,7.200 Te-108/I-112 111.93566	113 2.74 sec a/EC/ECp,9.060 Te-109/I-113/Te-112 112.93337	114 10.0 sec EC,5.900 MeV I-114 113.92814	115 18 sec EC/ECp,8.000 I-115/Te-114 114.92652	116 59 sec EC,4.660 MeV I-116 115.92172
117 61 sec EC/ECp,6.440 I-117/Te-116 116.92056	118 3.8 min EC,2.900 MeV I-118 117.91658	119 5.8 min EC,5.000 MeV I-119 118.91555	120 40 min EC,1.960 MeV I-120 119.91216	121 40.1 min EC,3.730 MeV I-121 120.91137	122 20.1 hr EC,4.234 MeV I-122 121.90856	123 2.08 hr EC,2.676 MeV I-123 122.90847
124 0.10% Stable 123.90589	125 16.9 hr EC,1.652 MeV I-125 124.90639	126 0.09% Stable 125.90426	127 36.4 da EC,1.581 MeV I-127 126.90517	128 1.91% Stable 127.90353	129 26.4% Stable 128.90477	130 4.1% Stable 129.90350
131 21.2% Stable 130.90508	132 26.9% Stable 131.90415	133 5.243 da B-,1.634 MeV Cs-133 132.90590	134 10.4% Stable 133.90539	135 9.14 hr B-,1.151 MeV Cs-135 134.90720	136 8.9% 9.3E+19 yr 2B-,7.570 MeV Ba-136 135.90722	137 3.818 min B-,4.172 MeV Cs-137 136.91156
138 14.08 min B-,2.770 MeV Cs-138 137.91398	139 39.68 sec B-,5.057 MeV Cs-139 138.91878	140 13.60 sec B-,4.060 MeV Cs-140 139.92163	141 1.73 sec B-/B-n,6.150 Cs-141/Cs-140 140.92665	142 1.24 sec B-/B-n,5.040 Cs-142/Cs-141 141.92970	143 0.30 sec B-,7.310 MeV Cs-143 142.93515	144 1.15 sec B-,6.100 MeV Cs-144 143.93848
145 0.9 sec B-/B-n,6.100 Cs-145/Cs-144 145.0	MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass