National League for Nursing (NLN) Science Practice Exam

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The symbol K on the periodic table stands for?

potassium.
calcium.
carbon.
phosphorus.

The correct answer is: potassium.

The symbol K on the periodic table represents potassium, which is a chemical element with the atomic number 19. The symbol K is derived from the Latin word "kalium," meaning potash, which refers to the original source of potassium obtained from wood ashes. Potassium is an essential dietary mineral important for various bodily functions, including nerve conduction, muscle contraction, and maintaining fluid balance. Understanding the periodic table and the symbols for elements is crucial, as each symbol provides important information regarding the element's identity and its properties. In this case, potassium is part of the alkali metal group, which is known for its highly reactive nature, especially with water.