Answer
The periodic law is the law based on the observation that when the elements are arranged in order of increasing mass, certain sets of properties recur periodically. This lead to the formation of the periodic table by aligning elements with similar properties into columns called groups.
Work Step by Step
The periodic law is the law based on the observation that when the elements are arranged in order of increasing mass, certain sets of properties recur periodically. This lead to the formation of the periodic table by aligning elements with similar properties into columns called groups.