You can search for things like...
- Aluminum
- Quantum Numbers of Lead
- Sc (Symbol of Scandium)
- 114 (Atomic Number of Flerovium)
- Ionization Energies of Sulfur in kcal/mol
Os
Osmium
43 known isotopes (5 stable,
38 radioactive)
161Os
Mass
160.989054 u
Abundance —
Half-life 0.64 milliseconds
Spin/Parity (7/2-)
Decay Mode(s) α (100%)
162Os
Mass
161.984434 u
Abundance —
Half-life 2.1 milliseconds
Spin/Parity 0+
Decay Mode(s) α (99%)
163Os
Mass
162.982462 u
Abundance —
Half-life 5.5 milliseconds
Spin/Parity (7/2-)
Decay Mode(s) α (100%)
164Os
Mass
163.978073 u
Abundance —
Half-life 21 milliseconds
Spin/Parity 0+
Decay Mode(s) α (96%), EC/β⁺ (4%)
165Os
Mass
164.976654 u
Abundance —
Half-life 71 milliseconds
Spin/Parity (7/2-)
Decay Mode(s) α (90%), EC/β⁺ (10%)
166Os
Mass
165.972698 u
Abundance —
Half-life 213 milliseconds
Spin/Parity 0+
Decay Mode(s) α (72%), EC/β⁺ (28%)
167Os
Mass
166.971552 u
Abundance —
Half-life 0.81 seconds
Spin/Parity (7/2-)
Decay Mode(s) α (57%), EC/β⁺ (43%)
168Os
Mass
167.967799 u
Abundance —
Half-life 2.1 seconds
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (57%), α (43%)
169Os
Mass
168.967018 u
Abundance —
Half-life 3.43 seconds
Spin/Parity (5/2-)
Decay Mode(s) EC/β⁺ (86.3%), α (13.7%)
170Os
Mass
169.963579 u
Abundance —
Half-life 7.37 seconds
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (90.5%), α (9.5%)
171Os
Mass
170.963180 u
Abundance —
Half-life 8.3 seconds
Spin/Parity (5/2-)
Decay Mode(s) EC/β⁺ (98.2%), α (1.8%)
172Os
Mass
171.960017 u
Abundance —
Half-life 19.2 seconds
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (99.8%), α (0.2%)
173Os
Mass
172.959808 u
Abundance —
Half-life 22.4 seconds
Spin/Parity 5/2-
Decay Mode(s) EC/β⁺ (99.6%), α (0.4%)
174Os
Mass
173.957063 u
Abundance —
Half-life 44 seconds
Spin/Parity 0+
Decay Mode(s) Electron capture (100%), α (0.02%)
175Os
Mass
174.956945 u
Abundance —
Half-life 1.4 m
Spin/Parity (5/2-)
Decay Mode(s) EC/β⁺ (100%)
176Os
Mass
175.954770 u
Abundance —
Half-life 3.6 m
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (100%)
177Os
Mass
176.954958 u
Abundance —
Half-life 3.0 m
Spin/Parity 1/2-
Decay Mode(s) EC/β⁺ (100%)
178Os
Mass
177.953253 u
Abundance —
Half-life 5.0 m
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (100%), α (0%)
179Os
Mass
178.953816 u
Abundance —
Half-life 6.5 m
Spin/Parity 1/2-
Decay Mode(s) EC/β⁺ (100%)
180Os
Mass
179.952382 u
Abundance —
Half-life 21.5 m
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (100%)
181Os
Mass
180.953247 u
Abundance —
Half-life 105 m
Spin/Parity 1/2-
Decay Mode(s) EC/β⁺ (100%)
182Os
Mass
181.952110 u
Abundance —
Half-life 21.84 h
Spin/Parity 0+
Decay Mode(s) Electron capture (100%)
183Os
Mass
182.953125 u
Abundance —
Half-life 13.0 h
Spin/Parity 9/2+
Decay Mode(s) EC/β⁺ (100%)
184Os
Mass
183.952493 u
Abundance 0.0200%
Half-life 5.6E13 years
Spin/Parity 0+
Decay Mode(s) Unknown
185Os
Mass
184.954046 u
Abundance —
Half-life 93.6 d
Spin/Parity 1/2-
Decay Mode(s) Electron capture (100%)
186Os
Mass
185.953838 u
Abundance 1.5900%
Half-life 2.0E+15 years
Spin/Parity 0+
Decay Mode(s) α (100%)
187Os Stable
Mass
186.955750 u
Abundance 1.9600%
Half-life Stable
Spin/Parity 1/2-
Decay Mode(s) —
188Os Stable
Mass
187.955837 u
Abundance 13.2400%
Half-life Stable
Spin/Parity 0+
Decay Mode(s) —
189Os Stable
Mass
188.958146 u
Abundance 16.1500%
Half-life Stable
Spin/Parity 3/2-
Decay Mode(s) —
190Os Stable
Mass
189.958445 u
Abundance 26.2600%
Half-life Stable
Spin/Parity 0+
Decay Mode(s) —
191Os
Mass
190.960928 u
Abundance —
Half-life 15.4 d
Spin/Parity 9/2-
Decay Mode(s) β⁻ (100%)
192Os Stable
Mass
191.961479 u
Abundance 40.7800%
Half-life Stable
Spin/Parity 0+
Decay Mode(s) —
193Os
Mass
192.964150 u
Abundance —
Half-life 29.830 h
Spin/Parity 3/2-
Decay Mode(s) β⁻ (100%)
194Os
Mass
193.965179 u
Abundance —
Half-life 6.0 years
Spin/Parity 0+
Decay Mode(s) β⁻ (100%)
195Os
Mass
194.968318 u
Abundance —
Half-life 6.5 m
Spin/Parity (3/2-)
Decay Mode(s) Unknown
196Os
Mass
195.969643 u
Abundance —
Half-life 34.9 m
Spin/Parity 0+
Decay Mode(s) β⁻ (100%)
197Os
Mass
196.973076 u
Abundance —
Half-life 2.8 m
Spin/Parity —
Decay Mode(s) β⁻ (100%)
198Os
Mass
197.974664 u
Abundance —
Half-life Unknown
Spin/Parity 0+
Decay Mode(s) β⁻ (100%)
199Os
Mass
198.978239 u
Abundance —
Half-life 5 seconds
Spin/Parity —
Decay Mode(s) β⁻ (100%)
200Os
Mass
199.980086 u
Abundance —
Half-life 6 seconds
Spin/Parity 0+
Decay Mode(s) β⁻ (100%)
201Os
Mass
200.984069 u
Abundance —
Half-life Unknown
Spin/Parity (1/2-)
Decay Mode(s) β⁻ (100%)
202Os
Mass
201.986548 u
Abundance —
Half-life 160 nanoseconds
Spin/Parity 0+
Decay Mode(s) Unknown
203Os
Mass
202.992195 u
Abundance —
Half-life Unknown
Spin/Parity (9/2+)
Decay Mode(s) β⁻ (100%)
Decay mode abbreviations:
β⁻ = Beta minus decay, β⁺ = Beta plus decay, EC = Electron capture, α = Alpha decay
n = Neutron emission, p = Proton emission, SF = Spontaneous fission, IT = Isomeric transition
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7