Question
Chemistry Question on Classification of elements & periodicity in properties
Which of the following is not a merit of Mendeleev's periodic table?
A
It helped in correcting the atomic masses of some of the elements.
B
He predicted the properties of some undiscovered elements and left gaps for them.
C
He framed the periodic table with vertical and horizontal columns and gave shape to it.
D
He gave separate places to isotopes in his periodic table.
Answer
He gave separate places to isotopes in his periodic table.
Explanation
Solution
Mendeleev could not give separate places to isotopes which had different atomic weights in the periodic table.