Radiation Safety Practice Exam

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Study for the Radiation Safety Exam. Test your knowledge with multiple choice questions, each equipped with hints and explanations. Prepare effectively and confidently!

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Which element has an atomic number of eighty-eight (88) according to the Periodic Table of Elements?

Radon
Radium
Ruthenium
Radii

The correct answer is: Radium

The element with an atomic number of eighty-eight (88) is Radium. In the context of the periodic table, the atomic number indicates the number of protons found in the nucleus of an atom of that element. Radium is classified as an alkaline earth metal, and it is known for its radioactive properties. Discovered by Marie Curie and Pierre Curie in 1898, Radium is particularly noteworthy for its historical use in luminescent paints and its medical applications, especially in treatments for cancer. Understanding the significance of atomic numbers is crucial for identifying elements correctly on the periodic table. Each element is assigned a unique atomic number, which allows scientists and chemists to organize and classify the elements based on their properties and behavior. Radon, Ruthenium, and the term "Radii" do not correspond to the atomic number 88; Radon has an atomic number of 86, Ruthenium is 44, and "Radii" does not refer to an actual element.