The chemical symbol of manganese is Mn. It is a transition metal found in group 7 and period 4 of the periodic table. Manganese is known for its key role in various industrial processes, particularly in steel production, where it enhances strength and hardness. Additionally, it is an essential trace element in the human diet, contributing to bone health, metabolism, and antioxidant defenses. Despite being abundant in the Earth's crust, manganese must be consumed in small amounts through foods such as nuts, seeds, whole grains, and leafy vegetables to maintain good health.