How do i complete the following nuclear equations?

Question

This is in chemistry and we have been doing all sorts of molality equations and so forth and have just been given this and not quite sure i follow.

We are asked in question 4:

Part A
What are the six types of radioactive decay?
I found that they were...
α emission, (alpha)
β emission (beta)
γ emission (gamma)
positron emission
electron capture
spontaneous fission


But then it asks in part B of the question...

Complete the following nuclear equations
a. proton -> neutron + ?
b. neutron -> proton + ?
c. proton + ? -> neutron

am i supposed to use one of the following types of radioactive decay? thanks for the help and assistance!

Answer 1

proton - write it as positron emission

neutron - write it as beta decay

write the third as an electron capture

Answer 2

Reactions in the nucleus dont involve molality considerations. If you remember that a neutron is considered to be a proton+an electron+binding energy, and that a positron is an anti-electron , the answers should be easy to figure out.

For example, in (a), for a proton to become a neutron, something must cart away the positive charge. If you look at your list, the positron is the
guy who does it. There will be a gamma emission also, since there is a destruction reaction:
positron+electron = energy.

Answer 3

I'm almost 100% sure that
B. neutron -> proton + ?
and
C. proton + ? -> neutron
is an electron, because a neutron is a proton, and an electron combined, and during beta decay the two seperate, and the electron it emitted. This release of electron leaves another proton, adding 1 to the atomic number.
A, im not really sure of, but I think its a positron.