Question

Given below are two statements: 
Statement (I): According to the Law of Octaves, the elements were arranged in the increasing order of their atomic number. 
Statement (II): Meyer observed a periodically repeated pattern upon plotting physical properties of certain elements against their respective atomic numbers. 
In the light of the above statements, Choose the correct answer from the options given below:

• A. Both Statement I and Statement II are false
• B. Statement I is true but Statement II is false
• C. Both Statement I and Statement II are true
• D. Statement I is false but Statement II is true

Hint:

In the history of periodicity, remember that earlier classifications like the Law of Octaves were based on atomic mass, not atomic number.

Answer 1

The Correct Option is D

Statement (I) is incorrect because the Law of Octaves was based on the arrangement of elements by their atomic mass, not atomic number. Statement (II) is correct as Meyer observed periodicity in the properties of elements.