Question

write the limitations of newlads of octoves?​

Answer 1

Answer:

limitations of newlands law of octaves are:

1) Newlands assumed that only 56 elements existed in nature and no more elements would be further discovered in the nearer future. But later on several new elements were discovered, whose properties couldn’t be defined as per the Law of Octaves.

2)In order to fit elements into law of octaves Newlands not only adjusted two elements

in the same slot but also adjusted some unlike elements under the same note.

3)Cobalt and nickel are in the same slot and are positioned in the same column with fluorine, chlorine and bromine possessing different properties than these elements.

4)Iron possessing similar properties as cobalt and nickel, is placed far away from these elements.

5) Thus, Newlands’ Law of Octaves can be obeyed well by the lighter elements only.

Answer 2

Answer:

LIMITATIONS OF NEWLAND'S LAW OF OCTAVES:

➠ Newland’s law of octaves held true only for elements up to calcium. Elements with greater atomic masses could not be accommodated into octaves.

➠The elements that were discovered later could not be fit into the octave pattern.

➠Elements with dissimilar properties were grouped together. For example, the halogens were grouped with some metals such as cobalt, nickel, and platinum.

➠Several elements were fit into the same slots in Newland’s periodic classification. For example, cobalt and nickel were placed in the same slot.