Which of the following is primarily responsible for the unique chemical properties of each element?

Question

Quizplus · Accepted Answer

The number of protons in the nucleus of an atom determines the element's atomic number and thus its unique chemical properties. The arrangement of electrons in the outer shell of an atom also plays a role in determining its chemical properties, but this is indirectly tied to the number of protons. The other answer choices (A, B, D, E) are not correct because they do not directly relate to the chemical properties of an element.

Which of the Following Is Primarily Responsible for the Unique