JEE Main 2025 Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main 2025

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 :

Answer: (4)

Solution

Law of octaves arranged elements by atomic weight (not number); Lothar Meyer used atomic weight (not atomic number) for his plots

Question ID VK-002256