Which of the following is not the symbol of an element?

Name: Which of the following is not the symbol of an element?
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Question

Quizplus · Accepted Answer

The symbol "Rx" is not the symbol of an element. It is actually an abbreviation commonly used in medicine to mean "prescription." The symbols of elements are based on the name of the element, usually using the first letter or two of the name in English or another language. For example, "At" is the symbol for Astatine, "Kr" for Krypton, "Fr" for Francium, and "Os" for Osmium.

Which of the Following Is Not the Symbol of an Element