Iron ($\text{Fe}$) is a crucial element with significance in both physical science and biological systems. Chemically, it is a durable transition metal and a major component of the Earth's mantle and core. In biological contexts, it is indispensable for life, serving primarily as a critical cofactor for numerous enzymatic reactions within the cell. Its most well-known biological function is facilitating the transport of oxygen, chiefly through its incorporation into the structure of hemoglobin. Furthermore, iron is vital for cellular respiration processes and participates in the synthesis and maintenance of various biological molecules. Deficiency in this element impairs multiple metabolic pathways, highlighting its fundamental role in sustaining life processes across diverse biological domains.