Question

an atom of the element zinc has an atomic number of 30 and a mass number of 65. how many protons does an uncharged zinc atom have? 30 35 65 95

Explanation:

In atomic structure (a concept in Chemistry, part of Natural Science), the atomic number of an element is defined as the number of protons in the nucleus of an atom of that element. For an uncharged atom, the number of protons equals the atomic number. Given zinc has an atomic number of 30, so the number of protons is 30.

Answer:

A. 30