Question

As radioactive materials decayed, they emited what?

Answer 1

Answer:

Beta-ray,Gamma-ray which are harmful for us. Because they contain highly accelerated particle which are damage our cells

Answer 2

Radioactive decays happened when an unstable atomic nucleus lost its energy by the process of emitting energy in a form of electromagnetic waves. This is called radiation.  

Explanation:

• There are total three types of radioactive radiation occurs, i.e Alpha decay, Beta decay and Gamma decay.
• The alpha decay happened when there are so many protons are present in the nucleus.
• The beta decay happed when there are so many neutrons are present in the nucleaus.
• The gamma decay happened when any nucleus has excessive energy in it.