defination and limitation of newlands law of octave?
Answers
Explanation:
The major limitations of Newlands' law of octaves were : (i) It was applicable to only lighter elements having atomic masses upto 40 u, i.e., upto calcium. ... (iv) When noble gases were discovered, the properties of the eighth element were no longer similar to the first one.
→ Law of Octaves only applicable up to calcium and after calcium every 8th did not possess properties similar to that of the first.
→ At the time of Newlands' only 56 elements were existed in nature and Newlands' assume that no more elements will be discovered the future.
→ But, later on , several new elements were discovered, whose properties did not fit into the law of octaves.
→ One important demerit of Newlands' law that he adjusted two elements in the same slot such as Cobalt and nickel [ Co and Ni ] .
→ With the discovery of noble gases the law of octaves become irrelevant.
→ Newlands' law of Octaves worked well with lighter elements only.