Question

(c) what is the atomic number of phosphorus? (d) what is the atomic number of radium? (e) what is the atomic number of zinc?

Explanation:

Step1: Recall atomic number knowledge

Atomic numbers are fixed for elements. Radium has an atomic number of 88.

Step2: Recall atomic number of zinc

Zinc has an atomic number of 30.

Answer:

(d) 88
(e) 30