Question

what were the reason for the failure of newland law of octaves

Answer 1

Thus Newlands law of octaves hold good. ... Newlands law of octaves failed for the following reasons: It was not valid for elements that had atomic masses higher than Ca. When more elements were discovered, such as elements from the noble gases such as He, Ne, Ar, they could not be accommodated in his table.

Answer 2

Answer:

the reason is that these element did not work with higher element newland adjust to element Cobalt and Nickel in the same salt and this Where placed in the same column as fluorine chlorine and bromine which have very difficult properties then this element iron which resemble Cobalt and Nickel in properties have been placed far away from these elements