How many groups and periods are present in the modern periodic table?
18, 8
8, 18
18, 7
7, 18
In the Modern Periodic Table, there are 18 columns called groups and 7 rows called periods.
Where would you locate the element with electronic configuration 2, 8 in the modern periodic table?
(a) group 8 (b) group 2 (c) group 18 (d) group 10