A sample is a mixture of 60Co (T₁/2= 5.27 y), 137Cs (T1/2= 30.17 y), and 133Ba (T₁/2= 10.6 y). At a certain time in the past, all three had the same activity. Which of the following is a correct statement about the present-day relative activities of the three isotopes in the sample? 137 Cs has the highest radiation level. 60 Co has the highest radiation level. 133Ba has the highest radiation level. There is not sufficient information to compare the radiation levels of each element. What is the ratio of the activity of 60Co to that of ¹37 Cs (two decimal places)?
Radioactive decay
The emission of energy to produce ionizing radiation is known as radioactive decay. Alpha, beta particles, and gamma rays are examples of ionizing radiation that could be released. Radioactive decay happens in radionuclides, which are imbalanced atoms. This periodic table's elements come in a variety of shapes and sizes. Several of these kinds are stable like nitrogen-14, hydrogen-2, and potassium-40, whereas others are not like uranium-238. In nature, one of the most stable phases of an element is usually the most prevalent. Every element, meanwhile, has an unstable state. Unstable variants are radioactive and release ionizing radiation. Certain elements, including uranium, have no stable forms and are constantly radioactive. Radionuclides are elements that release ionizing radiation.
Artificial Radioactivity
The radioactivity can be simply referred to as particle emission from nuclei due to the nuclear instability. There are different types of radiation such as alpha, beta and gamma radiation. Along with these there are different types of decay as well.
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