The table shows two isotopes of potassium and two isotopes of calcium. 39K 42K Stable B-decay 38.96371 41.9624 19 19 23 42.34797 0.38557 5.76 x 10-11 Type of emission Mass of neutral atom / u Number of electrons Number of protons Number of neutrons Total mass / u Mass defect / u Binding energy / J 39 Ca B+ decay 38.9707 Mass of the electron = 0.000549 u Mass of the proton = 1.007276 u Mass of the neutron = 1.008665 u a) Use data about potassium-42 to explain the concept of mass defect. 42Ca stable 41.95863 b) Complete the table and to calculate the mass defect and binding energy of 39K. Show your calculations in the space below.
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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