Chemical Element: Protactinium
Properties:
Periodic Number: 91
Symbol: Pa
Name: Protactinium
Average Mass: 231.03588 g/mol
Stable: no
Density: 15.4
Boiling Point: ?
Melting Point: 1,572.0°C
Specific Heat: ?
Ionisation Potential: 5.9 eV
91
Pa
231.03588
Isotopes:
Name Neutrons Mass Abundance Spin Stable Half Life
236Pa 145 236.04868 0 - no -
223Pa 132 223.02396 0 - no -
225Pa 134 225.02612 0 - no -
238Pa 147 238.0545 0 - no -
219Pa 128 219.01988 0 - no -
230Pa 139 230.034533 0 - no -
218Pa 127 218.02001 0 - no -
237Pa 146 237.05114 0 - no -
240Pa 149 240.06098 0 - no -
217Pa 126 217.01829 0 - no -
228Pa 137 228.031037 0 - no -
214Pa 123 214.02074 0 - no -
234Pa 143 234.043302 0 - no -
222Pa 131 222.02373 0 - no -
224Pa 133 224.02561 0 - no -
229Pa 138 229.032089 0 - no -
239Pa 148 239.05713 0 - no -
221Pa 130 221.02186 0 - no -
213Pa 122 213.02118 0 - no -
226Pa 135 226.027933 0 - no -
231Pa 140 231.0358789 0 - no -
220Pa 129 220.02188 0 - no -
232Pa 141 232.038582 0 - no -
233Pa 142 233.0402402 0 - no -
215Pa 124 215.0191 0 - no -
235Pa 144 235.04544 0 - no -
216Pa 125 216.01911 0 - no -
227Pa 136 227.028793 0 - no -