# Question #d01fc

##### 1 Answer

Dec 31, 2014

#### Explanation:

This nuclear equation describes the **electron-positron annihilation** in which an electron collides with its *antiparticle*, a positron; the collision annihilates the electron and the positron and releases two **gamma-ray photons**.

A positron is the electron's antiparticle, i.e. a particle that has the same mass but opposite charge. When the two collide the resulting annihilation and gamma-ray photon emission are described by this equation: