31. Which of the following pairs is NOT true?

|. Jhon Newlands: Law of Triads
II. Johann Dobereiner Law of Octaves
III. Dmitri Mendeleev: Properties of elements are periodic functions of their atomic masses
IV. Henry Mosely: Properties of elements are periodic functions of their atomic number.

1. | & ||
2. ||| & |V
3. || & |V
4. | & |||​