which of these properties is the best one to use for identification of an element?\n the number of neutrons…

which of these properties is the best one to use for identification of an element?\n the number of neutrons in the atomic nucleus\n the number of protons in the atomic nucleus\n the number of isotopes that are formed by the element\n the number of charges on ions of the element
Answer
Brief Explanations:
The atomic number, which is the number of protons in the atomic nucleus, is unique to each element. Different elements have different numbers of protons. Neutrons can vary in number (isotopes), the number of isotopes is not a defining - characteristic for identification, and the charge on ions can change depending on chemical reactions.
Answer:
the number of protons in the atomic nucleus