In the long form of periodic table, the valence shell electronic configuration of 5s2 5p4 corresponds to the element present in
A. Group 16 and period 5
B. Group 17 and period 6
C. Group 17 and period 5
D. Group 16 and period 6
The Attempt at a Solution
I know in normal periodic table 5s2 5 p4 corresponds to tellurium which is in group 16 and period 5.
Don't know why the answer is group 17 and period 6 ?
I think the long form of periodic table is same as normal periodic table.