An element X has mass number 35 and the number of neutrons is 18
An element "X" has mass number 35 and the number of neutrons is 18. Identify the group number and period of "X".
Answer
Atomic number of X = Mass number of X – No. of neutrons
Atomic number of X = 35 - 18 = 17
Electronic configuration = 2, 8, 7
Group number = 17
Period Number = 3