What kind of radiation is emitted in the following nuclear reaction

234/90TH---> 0/-1e + 234/91Pa

alpha

beta

gamma

positron

Beta emission is occurring in the given nuclear reaction.

Answer: Option B

Explanation:

In this equation, the reactant is the Thorium atom, which is reduced to palladium. As the atomic number get decreased by one, so an electron will be emitted. This process of emission of electrons by radiation or decaying the reactant nuclei to form a new product nuclei is termed as beta emission.

So, the electrons are generally termed as beta particles while the positrons are termed as positive beta particles. So this is a kind of radioactive reactions where the reactant changes to new element by releasing an electron and thus there is a change in the atomic number of the product by one.