Question

Difference between group and period in modern periodic table

Answer 1

Answer:

modern periodic table was introduced by moseley. according to it elements are arranged in horizontal rows called periods and vertical columns called groups.

Answer 2

Question:-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.