The elements in the human body tend to be located primarily toward the middle and right side of the periodic table, especially among nonmetals and some metals. The most abundant elements-oxygen, carbon, hydrogen, and nitrogen-are located in the upper middle to right side of the table. For example:

• Oxygen (O), the most abundant element in the body, is a nonmetal located in group 16.
• Carbon (C) is a nonmetal in group 14.
• Hydrogen (H) is in group 1 but is unique as a nonmetal gas.
• Nitrogen (N) is a nonmetal in group 15.

Other essential elements like calcium (Ca), phosphorus (P), potassium (K), sulfur (S), sodium (Na), chlorine (Cl), and magnesium (Mg) are also present. Calcium and magnesium are metals located toward the left side of the periodic table, while phosphorus, sulfur, chlorine, potassium, and sodium are nonmetals or metals located more centrally or to the right. In summary:

• Most human body elements are found among nonmetals and some metals in the middle to right side of the periodic table.
• The key elements (O, C, H, N) are in groups 1, 14, 15, and 16.
• Metals like calcium and magnesium are located in the alkaline earth metals group (group 2).
• Trace elements include metals and nonmetals scattered mostly in the middle and right side of the table.

This distribution reflects the chemical nature of elements necessary for life, with a predominance of nonmetals involved in organic molecules and water, and some metals important for structural and enzymatic functions