The identity of an element can be determined by the number of
A) protons.
B) neutrons.
C) electrons.
D) carbon atoms.
E) double bonds.

Question

Quizplus · Accepted Answer

The number of protons in an atom, also known as its atomic number, is unique to each element and is what determines its identity. This is because the number of protons in the nucleus determines the number of electrons orbiting the nucleus, which determines the chemical properties of the element. Therefore, the best choice is A) protons.

The Identity of an Element Can Be Determined by the Number