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- Berkelium
- Critical Pressure of Cerium
- As (Symbol of Arsenic)
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- Atomic Mass of Rubidium in g
Pt
Platinum
44 known isotopes (5 stable,
39 radioactive)
165Pt
Mass
164.999658 u
Abundance —
Half-life 0.26 milliseconds
Spin/Parity (7/2-)
Decay Mode(s) α (100%)
166Pt
Mass
165.994866 u
Abundance —
Half-life 300 microseconds
Spin/Parity 0+
Decay Mode(s) α (100%)
167Pt
Mass
166.992750 u
Abundance —
Half-life 0.7 milliseconds
Spin/Parity —
Decay Mode(s) α (100%)
168Pt
Mass
167.988180 u
Abundance —
Half-life 2.02 milliseconds
Spin/Parity 0+
Decay Mode(s) α (100%)
169Pt
Mass
168.986619 u
Abundance —
Half-life 7.0 milliseconds
Spin/Parity (7/2-)
Decay Mode(s) α (100%)
170Pt
Mass
169.982502 u
Abundance —
Half-life 13.8 milliseconds
Spin/Parity 0+
Decay Mode(s) α (98%), EC/β⁺ (2%)
171Pt
Mass
170.981249 u
Abundance —
Half-life 45.5 milliseconds
Spin/Parity (7/2-)
Decay Mode(s) α (90%), EC/β⁺ (10%)
172Pt
Mass
171.977341 u
Abundance —
Half-life 97.6 milliseconds
Spin/Parity 0+
Decay Mode(s) α (94%), EC/β⁺ (6%)
173Pt
Mass
172.976450 u
Abundance —
Half-life 382 milliseconds
Spin/Parity (5/2-)
Decay Mode(s) α (86%), EC/β⁺ (16%)
174Pt
Mass
173.972820 u
Abundance —
Half-life 0.889 seconds
Spin/Parity 0+
Decay Mode(s) α (76%), EC/β⁺ (24%)
175Pt
Mass
174.972401 u
Abundance —
Half-life 2.53 seconds
Spin/Parity 7/2-
Decay Mode(s) α (64%), EC/β⁺ (36%)
176Pt
Mass
175.968938 u
Abundance —
Half-life 6.33 seconds
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (60%), α (40%)
177Pt
Mass
176.968470 u
Abundance —
Half-life 10.0 seconds
Spin/Parity 5/2-
Decay Mode(s) EC/β⁺ (94.3%), α (5.7%)
178Pt
Mass
177.965649 u
Abundance —
Half-life 20.7 seconds
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (92.3%), α (7.7%)
179Pt
Mass
178.965359 u
Abundance —
Half-life 21.2 seconds
Spin/Parity 1/2-
Decay Mode(s) EC/β⁺ (99.76%), α (0.24%)
180Pt
Mass
179.963038 u
Abundance —
Half-life 56 seconds
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (99.7%), α (0.3%)
181Pt
Mass
180.963090 u
Abundance —
Half-life 52.0 seconds
Spin/Parity 1/2-
Decay Mode(s) EC/β⁺ (100%), α (0.08%)
182Pt
Mass
181.961172 u
Abundance —
Half-life 2.67 m
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (99.962%), α (0.038%)
183Pt
Mass
182.961596 u
Abundance —
Half-life 6.5 m
Spin/Parity 1/2-
Decay Mode(s) EC/β⁺ (100%), α (0.0096%)
184Pt
Mass
183.959922 u
Abundance —
Half-life 17.3 m
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (100%), α (0.001%)
185Pt
Mass
184.960614 u
Abundance —
Half-life 70.9 m
Spin/Parity 9/2+
Decay Mode(s) EC/β⁺ (100%)
186Pt
Mass
185.959351 u
Abundance —
Half-life 2.10 h
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (100%), α (0.00014%)
187Pt
Mass
186.960617 u
Abundance —
Half-life 2.35 h
Spin/Parity 3/2-
Decay Mode(s) EC/β⁺ (100%)
188Pt
Mass
187.959398 u
Abundance —
Half-life 10.16 d
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (99.999974%), α (0.000026%)
189Pt
Mass
188.960848 u
Abundance —
Half-life 10.87 h
Spin/Parity 3/2-
Decay Mode(s) EC/β⁺ (100%)
190Pt
Mass
189.959950 u
Abundance 0.0120%
Half-life 4.97E11 years
Spin/Parity 0+
Decay Mode(s) α (100%)
191Pt
Mass
190.961676 u
Abundance —
Half-life 2.83 d
Spin/Parity 3/2-
Decay Mode(s) Electron capture (100%)
192Pt Stable
Mass
191.961043 u
Abundance 0.7820%
Half-life Stable
Spin/Parity 0+
Decay Mode(s) —
193Pt
Mass
192.962985 u
Abundance —
Half-life 50 years
Spin/Parity 1/2-
Decay Mode(s) Electron capture (100%)
194Pt Stable
Mass
193.962683 u
Abundance 32.8640%
Half-life Stable
Spin/Parity 0+
Decay Mode(s) —
195Pt Stable
Mass
194.964794 u
Abundance 33.7750%
Half-life Stable
Spin/Parity 1/2-
Decay Mode(s) —
196Pt Stable
Mass
195.964955 u
Abundance 25.2110%
Half-life Stable
Spin/Parity 0+
Decay Mode(s) —
197Pt
Mass
196.967343 u
Abundance —
Half-life 19.8915 h
Spin/Parity 1/2-
Decay Mode(s) β⁻ (100%)
198Pt Stable
Mass
197.967897 u
Abundance 7.3560%
Half-life Stable
Spin/Parity 0+
Decay Mode(s) —
199Pt
Mass
198.970597 u
Abundance —
Half-life 30.80 m
Spin/Parity 5/2-
Decay Mode(s) β⁻ (100%)
200Pt
Mass
199.971445 u
Abundance —
Half-life 12.6 h
Spin/Parity 0+
Decay Mode(s) β⁻ (100%)
201Pt
Mass
200.974513 u
Abundance —
Half-life 2.46 m
Spin/Parity (5/2-)
Decay Mode(s) β⁻ (100%)
202Pt
Mass
201.975639 u
Abundance —
Half-life 44 h
Spin/Parity 0+
Decay Mode(s) β⁻ (100%)
203Pt
Mass
202.979055 u
Abundance —
Half-life 22 seconds
Spin/Parity (1/2-)
Decay Mode(s) β⁻ (100%)
204Pt
Mass
203.981084 u
Abundance —
Half-life 10.3 seconds
Spin/Parity 0+
Decay Mode(s) β⁻ (100%)
205Pt
Mass
204.986237 u
Abundance —
Half-life Unknown
Spin/Parity (9/2+)
Decay Mode(s) β⁻ (100%)
206Pt
Mass
205.990080 u
Abundance —
Half-life 160 nanoseconds
Spin/Parity 0+
Decay Mode(s) Unknown
207Pt
Mass
206.995556 u
Abundance —
Half-life Unknown
Spin/Parity —
Decay Mode(s) β⁻ (100%)
208Pt
Mass
207.999463 u
Abundance —
Half-life Unknown
Spin/Parity 0+
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
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