Why was John Alexander Reina Newlands periodic table rejected?

Answer 1

Newland's Periodic Table was rejected because it had errors, for example he put iron and oxygen and sulfur in the same group even though iron is a metal and the other two are non-metals. This, along with the fact he put elements such as cobalt and nickel in the same box, made his table unacceptable.

Answer 2

John Alexander Reina Newlands' periodic table was rejected because it did not leave gaps for undiscovered elements and did not account for the existence of transition metals. Additionally, his table did not follow a consistent pattern of properties across elements, which limited its practicality and acceptance by the scientific community.