Question

what is the atomic number of the next element in the same period as phosphorus?
7
15
16
33

Explanation:

Step1: Recall Phosphorus' atomic number

Phosphorus (P) has an atomic number of 15.

Step2: Determine next element in same period

Elements in the same period (row) of the periodic table follow each other sequentially by atomic number. The next element after P (atomic number 15) is Sulfur (S), with atomic number \( 15 + 1 = 16 \).

Answer:

16 (corresponding to the option "16")