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:

Step1: Recall atomic number definition

The atomic number of an element is equal to the number of protons in an atom of that element.

Step2: Identify given atomic number

The atomic number of zinc is 30.

Answer:

A. 30