Question

Differentiate between groups and periods of modern periodic table.

Answer 1

Groups and periods are two ways of categorizing elements on the periodic table. ... Answer: Periods are horizontal rows (across) the periodic table, while groups are vertical columns (down) the table. Atomic number increases both as you move down a group or across a period.

Answer 2

groups(18 in number) are vertical columns and periods(7 in number) are horizontal rows