Radioactive contamination occurs when radioactive materials are present or deposited in the atmosphere or environment, especially where their existence is accidental and where they pose an environmental danger due to radioactive decay. Emissions of harmful ionizing radiation (radioactive decay) such as beta or alpha particles, gamma rays, or neutrons in the atmosphere where they reside are responsible for the damage caused by radioactive materials.Since the substances are characterized by radiation, they can severely impact, change and even kill a plant, animal, and human life. It is because there is a lot of instability of the particles found in the radioactive materials. Radioactive contamination occurs when radioactive materials are present or deposited in the atmosphere or environment, especially where their existence is accidental and where they pose an environmental danger due to radioactive decay.