limitations of newlands octaves
Answers
Answered by
12
Limitations of law of octaves: The law of octaves has the following limitations ;
(A) The law of octaves was found to be applicable only upto calcium. It was not applicable to elements of higher atomic masses.
(B) Position of hydrogen along with fluorine and chlorine was not justified on the basis of chemical properties.
(C) Newlands placed two elements in the same slot to fit elements in the table. He also placed some unlike elements under the same slot. For example, cobalt and nickel are placed in the same slot and in the column of fluorine, chlorine and bromine. But cobalt and nickel have properties quite different from fluorine, chlorine and bromine. Similarly, iron which has resemblances with cobalt and nickel in its properties has been placed for away from these elements.
Thus, it was realized that Newlands’ law of octaves worked well only with lighter elements. Therefore, this classification was rejected.
(A) The law of octaves was found to be applicable only upto calcium. It was not applicable to elements of higher atomic masses.
(B) Position of hydrogen along with fluorine and chlorine was not justified on the basis of chemical properties.
(C) Newlands placed two elements in the same slot to fit elements in the table. He also placed some unlike elements under the same slot. For example, cobalt and nickel are placed in the same slot and in the column of fluorine, chlorine and bromine. But cobalt and nickel have properties quite different from fluorine, chlorine and bromine. Similarly, iron which has resemblances with cobalt and nickel in its properties has been placed for away from these elements.
Thus, it was realized that Newlands’ law of octaves worked well only with lighter elements. Therefore, this classification was rejected.
Answered by
8
This law was applied only upto calcium After calcium every 8th element do not possess the same properties similar to that of the first.
Newland assumed that there were only 56 elements existed in nature and no more elements wold be discovered in the future.But later on several new elements were discovered.
One more drawback is that in order to fit elements into his table newlands adjusted two elements in the same slot and also put some unlike elements under the same column .
Newland assumed that there were only 56 elements existed in nature and no more elements wold be discovered in the future.But later on several new elements were discovered.
One more drawback is that in order to fit elements into his table newlands adjusted two elements in the same slot and also put some unlike elements under the same column .
Similar questions