Question

3 what is the significance of the atomic number? a) it represents the number of neutrons. b) it determines an elements chemical properties. c) it indicates the number of protons in the nucleus. d) it is irrelevant in identifying elements.

Explanation:

The atomic number is defined as the number of protons in an atom's nucleus. It is unique for each element and determines the element's identity and its position in the periodic table. Chemical properties are mainly determined by the number of electrons, which is equal to the number of protons (atomic number) in a neutral atom.

Answer:

C. It indicates the number of protons in the nucleus.