Element with symbol Pa and atomic number of 91.
Sinònims
Examples for "pa"
Examples for "pa"
1He did better'n this in Castlemaine; and I'd pa behind me there.
2Mimi went to confer with Great-pa for a minute, then came back.
3Making sure they don't waste your pa's time and money, that's all.
4And then the Humane society had pa arrested for cruelty to animals.
5What mule ever had another mule for a ma or a pa?'
1A 231Pa reference material has been characterized for amount of protactinium.
2Scuffles soon arose over who'd first bagged hafnium, protactinium, and technetium.
3This addition of a proton shifts it to the next element on the table, protactinium-233.
4They rechristened it protactinium, or "parent of actinium," the element into which it (eventually) decayed.
5This is also unstable, so the protactinium spits out another electron and transforms into what you started with, uranium-233.