Which determines the chemical and physical properties of an atom of an element?

Question

Quizplus · Accepted Answer

The atomic number, which is the number of protons in the atom's nucleus, determines the chemical properties of the element because it dictates the element's unique number of electrons and how those electrons interact with other atoms. The physical properties are also affected by the number and arrangement of electrons in the outermost energy level. Therefore, the correct answer is option D (atomic number).

Which Determines the Chemical and Physical Properties of an Atom