(}_{19)^42Karrow _(-1)^0e+_(20)^42Ca What type of reaction is this? gamma quiet beta alpha

## Step 1<br />The given equation represents a type of nuclear reaction where a potassium isotope (with atomic number 19 and mass number 42) decays into a calcium isotope (with atomic number 20 and mass number 42), emitting an electron (also known as a beta particle) in the process. <br /><br />## Step 2<br />This type of reaction is known as beta decay. In beta decay, a neutron in the nucleus of an atom is converted into a proton, an electron, and an antineutrino. The electron is then emitted from the nucleus.<br /><br />## Step 3<br />The atomic number of the atom increases by one, while the mass number remains the same. This is characteristic of beta decay.