1.

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 =35 18=17
Electronic configuration = 2, 8, 7
Group number = 17 , Period No. = 3


Discussion

No Comment Found

Related InterviewSolutions