Question

Which of the following represents positron emission?
Select one:
a. 3015P ---> 3014Si + ___
b. 23892U ---> 23490Th + ___
c. 147N + 42He --->178O + ___
d. 23490Th ---> 23491Pa + ___

Answer 1

@abb0t

Answer 2

It might help if you knew what \(positron~emission\) meant. So I ask, do you know what that means? :)

Answer 3

Positron emission is a byproduct of a type of radioactive decay known as beta plus decay.
According to wiseGEEK.com :P

Answer 4

HINT: you're releaseing a positron.

Answer 5

Well, yes it's a \(\beta^+\)-decay, but do you know what that actually means? Lol.

Answer 6

A positron is an anti-electron: it has the same mass, but has a +1 change instead of a -1 charge. The remaining nucleus has one less proton and one more neutron

Answer 7

Yep, so what that means is that a proton inside a radionuclide nucleus is converted into a neutron. Does that make sense?

Answer 8

Somewhat, I'm not quite sure how that applies to the question above. :)

Answer 9

so you are decreasing the atomic number by one.

Answer 10

You're losing a positron. Which means -1
Do you know the notation? What it means when you have for instance, \(_{12}^{23}Mg\)??

Answer 11

Yes, correct!!

Answer 12

is it a?? :P

Answer 13

Correct.

Answer 14

Yay! Thank you so much @abb0t! :)

Answer 15

No worries! It's better for all of us in the long-run! :)