Calcium () is a major macro-mineral in the human body. Which of the following biological functions a — s Block Elements Chemistry Question

💡 Solution & Explanation

Over $99\%$ of body Calcium is in bones and teeth as apatite. The remaining $1\%$ circulating in plasma is vital for blood clotting, neuromuscular function, and maintaining cell membrane integrity. Statement D is false because Iron ($Fe$) is the central atom in hemoglobin, not Calcium.