What are the achievements and limitations of Newland's law of octave?
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Solution
Newland's law of Octave: The arrangement of elements in the increasing order of the atomic masses resulting in the recurrence of elements with similar properties at regular intervals of seven is called Newland's law of the octave.
Achievements:
1.Periodicity - Newland was able to explain the repetition of properties of elements called periodicity for the first time.
2. Newland's classification was one of the earlier classifications based on atomic mass and led to the further development in the periodic classification.
Limitations:
1. Newland's law was applicable only till Calcium and periodicity is not observed for all the elements available.
2.The number of elements known at the time of Newland's is 56 and many elements were discovered later.
