The diagram shows a box in the periodic table. 15 P Phosphorus 31.0 What is the atomic number of the element shown? A. 46.0 B. 15 C. 31.0 D. 30​

The diagram shows a box in the periodic table 15 P Phosphorus 310 What is the atomic number of the element shown A 460 B 15 C 310 D 30 class=