What is the atomic number of element of period 3 and group 17 of the Periodic Table?
Q. What is the atomic number of element of period 3 and group 17 of the Periodic Table?
A. 10
B. 4
C. 17
D. 21
Answer: 17
A. 10
B. 4
C. 17
D. 21
Answer: 17