Question

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

Explanation:

Phosphorus (P) has an atomic number of 15 and is in Period 3. The next element in the same period (Period 3) is Sulfur (S), which has an atomic number of 16.

Answer:

16 (corresponding to the option with "16")