Kaplan Nursing Entrance Exam Practice 2026 – Comprehensive Prep

The symbol Ca on the periodic table represents calcium, which is an essential alkaline earth metal with the atomic number 20. Calcium plays a crucial role in various biological processes, including muscle contraction, neurotransmission, and the formation of bones and teeth. It is abundant in nature, primarily found in limestone, gypsum, and various minerals, and is vital for maintaining healthy bodily functions. In contrast, carbon, cadmium, and cesium are represented by different symbols: C, Cd, and Cs, respectively, indicating their unique properties and classifications on the periodic table.