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Tungsten isotopes

Tungsten isotopes are varieties of the chemical element of tungsten having a different number of neutrons in the nucleus . Tungsten isotopes are known with mass numbers from 158 to 192 (the number of protons 74, neutrons from 84 to 118), and more than 10 nuclear isomers .

Natural tungsten consists of a mixture of five isotopes . Four of them are stable:

  • 182 W ( isotopic prevalence of 26.50%)
  • 183 W (isotopic prevalence of 14.31%)
  • 184 W (isotopic prevalence of 30.64%)
  • 186 W (isotopic prevalence of 28.43%)

Another isotope has a huge half-life , much more than the age of the universe :

  • 180 W (isotopic abundance 0.12%)

According to the calculations, stable isotopes can also be unstable, but their decay was not observed experimentally.

Tungsten Isotope Table

Symbol
nuclide
Z ( p )N ( n )Isotope mass [1]
( a.m. )
Period
half-life [2]
(T 1/2 )
Spin and Parity
kernels [2]
Excitation energy
157 W7483275 ms
158 W7484157.974561.37 ms0+
158m W1.889 MeV143 μs8+
159 W7485158.972928.2 ms7 / 2-
160 W7486159,9684890 ms0+
161 W7487160,96736409 ms7 / 2-
162 W7488161.9634971.36 s0+
163 W7489162.962522.8 s3 / 2-
164 W7490163,9589546.3 s0+
165 W7491164.9582805.1 s3 / 2-
166 W7492165.95502719.2 s0+
167 W7493166.95481619.9 s3 / 2-
168 W7494167,95180851 s0+
169 W7495168,95177976 s5 / 2-
170 W7496169,9492282.42 min0+
171 W7497170,949452.38 min5 / 2-
172 W7498171.947296.6 min0+
173 W7499172.947697.6 min5 / 2-
174 W74100173.9460833.2 min0+
175 W74101174.9467235.2 min1/2 -
176 W74102175,945632.5 h0+
177 W74103176,94664132 min1/2 -
178 W74104177,94587621.6 days0+
179 W74105178.94707037.05 min7 / 2-
179m1 W221.926 keV6.40 min1/2 -
179m2 W1.63190 MeV390 ns21/2 +
179m3 W3.34845 MeV750 ns35 / 2-
180 W74106179,9467041,2⋅10 18 years0+
180m1 W1.52904 MeV5.47 mseight-
180m2 W3.26456 MeV2.33 μs14-
181 W74107180,948197121.2 days9/2 +
182 W74108181.9482042stable0+
183 W74109182,95022306,7⋅10 20 years1/2 -
183m W309.493 keV5.2 s11/2 +
184 W74110183,9509312stable0+
185 W74111184.953419375.1 days3 / 2-
185m W197.43 keV1,597 min11/2 +
186 W74112185.9543641stable0+
186m1 W1.5172 MeV18 μs7-
186m2 W3.5428 MeV3 ms16+
187 W74113186.957160523.72 h3 / 2-
188 W74114187,95848969.78 days0+
189 W74115188.9619111.6 min3 / 2-
190 W74116189,9631830.0 min0+
190m W2,381 MeV3.1 msten-
191 W74117190,9666020 s3 / 2-
192 W74118191,9681710 s0+
193 W74119> 300 ns
194 W74120> 300 ns

Notes

  1. ↑ Data shown for Audi G. , Wapstra AH , Thibault C. The AME2003 atomic mass evaluation (II). Tables, graphs, and references (Eng.) // Nuclear Physics A. - 2003. - Vol. 729 . - P. 337–676 . - DOI : 10.1016 / j.nuclphysa.2003.11.003 . - .
  2. ↑ 1 2 Data are given for Audi G. , Bersillon O. , Blachot J. , Wapstra AH The NUBASE evaluation of nuclear and decay properties // Nuclear Physics A. - 2003 .-- T. 729 . - S. 3—128 . - DOI : 10.1016 / j.nuclphysa.2003.11.001 . - .
Isotopes of tantalum Periodic table on the isotopes of elements Rhenium isotopes
one
H
2
He
3
Li
four
Be
five
B
6
C
7
N
eight
O
9
F
ten
Ne
eleven
Na
12
Mg
13
Al
14
Si
15
P
sixteen
S
17
Cl
18
Ar
nineteen
K
20
Ca
21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29th
Cu
thirty
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
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
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
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
Source - https://ru.wikipedia.org/w/index.php?title=Tungsten isotopes&oldid = 99479677


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