HELP!!! I have like 20 of these kinds of questions on my homework and no clue how to solve them.

Question

Electron capture transforms 40 K 19 into what nuclide?!?!

Thank you

Answer 1

look at the definitions for each type of reaction. For instance, electron capture must reduce the atomic number from +19 to 18, and not change the atomic mass number.

40 ?? 18

Go through each type of reaction with the definition of that reaction, and apply it to the atomic number and atomic mass.

Answer 2

Oh okay so for this one would it be:

40 Ar 18????

thanks so much for your help!