The weak interaction affects:
The weak interaction enables all lepton? and quark particles and antiparticles interchange energy, mass and charge - effectively change in to each other.
With a field strength some 109 times less than the strong nuclear force (10-18 m). , its influence is limited to action within the atomic nucleus. This short range is explained by the large mass of the weak exchange particles (about 90 Gev?).
The electromagnetic force and the weak nuclear force can be described as two different aspects of a single electroweak force.