Answer :
Final answer:
An atomic structure of an atom of element 115 has 115 protons in its nucleus. This element does not exist in nature because it is unstable and radioactive. This is due to a phenomenon known as radioactive decay, where it loses energy and transforms into a more stable element. Correct option is D)
Explanation:
The nucleus of an atom of element 115 would contain 115 protons. This is because the atomic number of an element, which is used to determine its position on the periodic table, represents the number of protons in its atomic nucleus.
Element 115 does not exist in nature because it's unstable. Unstable elements, specifically those with a large number of protons in their nucleus, tend to be radioactive and can decay into other elements. This process involves the release of energy and particles from the nucleus, and is a common trait of elements with larger atomic numbers, such as element 115.
This instability and natural absence is due to a phenomenon known as radioactive decay, where an unstable atomic nucleus loses energy by emitting radiation in the form of alpha, beta, or gamma rays. This transformation changes one type of atomic nucleus into a different nucleus or nucleon, a process involving much larger energies than chemical reactions. As a result, unstable elements, or radioisotopes, such as element 115, do not occur in nature because their instability leads to rapid transformation into other, more stable elements.
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