Question

The number of protons within the atom's nucleus is called atomic number and is equal to the number of electrons in any neutral atom. Each atomic number identifies a specific element, but not the ___________. A) cation. B) ion. C) isotope. D) molecule,

Answer 1

the answer is actually isotope (took the usa test prep test)

Step-by-step explanation:

Isotope- Each atomic number identifies a specific element and the number of protons and electrons. The atomic number does no identify the isotope, which may have a variety of neutrons: c-12 and C-1 are examples.

(this is the explanation they gave)