What kind of decay causes neptunium-238 to form uranium-238?

From the periodic table we can see that Neptunium has an
atomic number of 93 and Uranium has an atomic number of 92. If neptunium-238 has to
decay to form uranium-238, the atomic number has to decrease by 1 but the atomic mass
remains the same at 238.

This is possible through the
process of beta plus decay. In beta plus decay there is a conversion of a proton in the
atom into a neutron with a positron and a neutrino also being produced during the
process. Positrons and electrons are anti-matter counterparts of each other. Beta plus
decay also has an accompanying positron emission.

N-238
--> U-238 + B+