Home » What is the atomic number of element of period 3 and group 17 of the Periodic Table? Periodic Table MCQs What is the atomic number of element of period 3 and group 17 of the Periodic Table? April 14, 2022 34 Views Q. What is the atomic number of element of period 3 and group 17 of the Periodic Table?A. 10B. 4C. 17D. 21Answer: 17
