Protactinium is a natural chemical element but now is obtained in nuclear reactors.
Protactinium is a natural chemical element; but protactinium can be obtained artificially by nuclear reactions from 232Th.
Protactinium is a natural chemical element; but protactinium can be obtained artificially by nuclear reactions from 232Th.
Protactinium is a natural chemical element, metal, very radioactive.
Protactinium is a natural radioactive chemical element.
1. Protactinium is a natural chemical element; protactinium can be separated from uranium ores. 2. Protactinium can be obtained by nuclear reactions from thorium 232.
Because protactinium is extremely radoactive.
Protactinium hasn't any everyday use or industrial use. Protactinium is used for studies in laboratories; and sometimes protactinium natural isotopes give data in geological dating.
Protactinium hasn't any everyday use or industrial use. Protactinium is used for studies in laboratories; and sometimes protactinium natural isotopes give data in geological dating.
Protactinium hasn't any everyday use or industrial use. Protactinium is used for studies in laboratories; and sometimes protactinium natural isotopes give data in geological dating.
Protactinium is a natural chemical element, found in uranium ores as pitchblende in extremely low concentrations; but protactinium can be obtained artificially by nuclear reactions from 232Th.
Protactinium is a natural chemical element, found in uranium ores as pitchblende in extremely low concentrations; but protactinium can be obtained artificially by nuclear reactions from 232Th.
Protactinium hasn't practical uses.The ratioPa-231/Th-230 is used for radiometric dating of natural sediments old up to 175 000 years.