Mendeleev's Periodic Table > Pd - Palladium
Pd - Palladium
Palladium was discovered by Wollaston in 1803 in London. Palladium is a steel-white metal, does not tarnish in air, and is the least dense and lowest melting of the platinum group metals. When annealed, it is soft and ductile. Cold working increases its strength and hardness. Palladium is used in some watch springs. At room temperatures the metal has the unusual property of absorbing up to 900 times its own volume of hydrogen. Hydrogen readily diffuses through heated palladium and this provides a means of purifying the gas.
Ruthenium, rhodium, palladium, osmium, iridium, and platinum together make up a group of elements referred to as the platinum group metals (PGM).
| - | 46 | Density | g/mL | 12 | ||||
|---|---|---|---|---|---|---|---|---|
| u | 106 | .4 | K | 1825 | ||||
| A | 1 | .28 | K | 3237 | ||||
| A | 1 | .79 | kJ/mol | 357 | ||||
| V | 8 | .34 | kJ/mol | 17 | .6 | |||
| - | 2 | .2 | J/gK | 0 | .24 | |||
| | ||||||||
| MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass |
093 60 sec EC,9.500 MeV Rh-93 92.935909 |
094 9.0 sec EC,6.600 MeV Rh-94 93.928824 |
095 13.3 sec EC/ECp,10.200 Rh-95/Ru-94 94.926784 |
096 122 sec EC,3.450 MeV Rh-96 95.918228 |
|
|---|---|---|---|---|---|
| MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass |
097 3.10 min EC,4.800 MeV Rh-97 96.916478 |
098 17.7 min EC,1.873 MeV Rh-98 97.912726 |
099 21.4 min EC,3.365 MeV Rh-99 98.911809 |
100 3.63 da EC,3.630 MeV Rh-100 99.908505 |
|
| MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass |
101 8.47 hr EC,1.980 MeV Rh-101 100.90828 |
102 1.02% Stable 101.90560 |
103 16.991 da EC,2.660 MeV Rh-103 102.90608 |
104 11.14% Stable 103.90403 |
|
| MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass |
105 22.33% Stable 104.90508 |
106 27.33% Stable 105.90348 |
107 6.5E+6 yr B-,1.511 MeV Ag-107 106.90512 |
108 26.46% Stable 107.90389 |
|
| MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass |
109 13.7012 hr B-,1.116 MeV Ag-109 108.90595 |
110 11.72% Stable 109.90515 |
111 23.4 min B-,2.190 MeV Ag-111 110.90764 |
112 21.03 hr B-,6.800 MeV Ag-112 111.90731 |
|
| MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass |
113 93 sec B-,3.340 MeV Ag-113 112.91015 |
114 2.42 min B-,1.451 MeV Ag-114 113.91036 |
115 25 sec B-,4.580 MeV Ag-115 114.91368 |
116 11.8 sec B-,2.610 MeV Ag-116 115.91415 |
|
| MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass |
117 4.3 sec B-,5.700 MeV Ag-117 116.91787 |
118 1.9 sec B-,4.100 MeV Ag-118 117.91890 |
119 0.92 sec B-,6.500 MeV Ag-119 118.92270 |
120 0.5 sec B-,5.000 MeV Ag-120 119.92399 |
|