Question

chlorine-37 has an atomic number of ______. a. 20 b. 35.45 c. 37 d. 17

Explanation:

Step1: Recall atomic number concept

The atomic number of an element is a characteristic property and is the same for all isotopes of that element. Chlorine - 37 is an isotope of chlorine.

Step2: Know chlorine's atomic number

The atomic number of chlorine is 17 regardless of its isotope.

Answer:

D. 17