Question
Question: Which of the following is not a merit of mendeleev’s periodic table?...
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.