The answer is rings, I know this because i took a test about it and I got it right
Answer:
hypothesis
Explanation:
that's what they do first
Answer: :)
Ore is commonly found and formed in rocks under the ocean floor and beneath the ground.
Explanation:
:/
Answer:
Various limitations of Mendeleev's periodic table are:-
Position of hydrogen - he couldn't assign a correct position to hydrogen as it showed properties of both alkali and halogens .
Position of isotopes - he considered that the properties of elements are a function of their atomic masses. Hence isotopes of a same element couldn't be placed.
In the d-block , elements with lower atomic number were placed before higher atomic number.
Explanation: