Pa
1
9.9
A rare radioactive metal that comes from uranium and slowly turns into lead
- noun
- /piː eɪ/
- Specialized
:
Pa
- In the periodic table, Pa stands for protactinium, which is essential for understanding nuclear chemistry.
Examples
-
Researchers are studying Pa due to its unique properties in radioactive decay.
-
Because of refractory hypotension during surgery, a pulmonary artery (PA) catheter was inserted to monitor his hemodynamic status.
Academic text (2005) -
The scientist explained that Pa is a rare element used in certain types of nuclear reactors.
Synonyms
1
9.9
A rare short-lived radioactive metal found in uranium ores that slowly turns into lead
is the chemical symbol form rather than the full element name
9.9
A short-lived radioactive metal that forms from uranium and turns into actinium and lead
is the chemical symbol notation rather than the spelled-out name
Compounds
Surface Forms
Etymology
The word Pa is the chemical symbol for protactinium, a radioactive element. The name protactinium comes from pro- meaning 'first' and actinium, because it turns into actinium as it decays, so the name helps you remember it comes before actinium.