4.
Protactinium-231 undergoes alpha decay as shown:
231 Pa → 4X + He
Enter the appropri...
![Chemistry](/tpl/images/cats/himiya.png)
Chemistry, 22.10.2020 14:01, spowell4657
4.
Protactinium-231 undergoes alpha decay as shown:
231 Pa → 4X + He
Enter the appropriate values for A and Z and the chemical symbol for
Х
A:
Z:
X:
![answer](/tpl/images/cats/otvet.png)
Answers: 1
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