InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
What were the limitations of newlands law of octaves |
| Answer» Limitations :-\tThe law of octaves was found to be applicable only upto calcium. It was not applicable to elements of higher atomic masses.\xa0\tPosition of hydrogen along with fluorine and chlorine was not justified on the basis of chemical properties.\xa0\tNewlands placed two elements in the same slot to fit elements in the table. He also placed some unlike elements under the same slot.\tFor 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.\tThus, it was realized that Newlands’ law of octaves worked well only with lighter elements. Therefore, this classification was rejected. | |