Question

Which of the following is not a limitation of Mendeleev’s Periodic table?

(A) In some cases, it was found that an element with higher atomic mass was placed

before an element with lower atomic mass

(B) The position of hydrogen was not fixed i.e. it could be placed with alkali metals as

well as halogens

(C) All the isotopes of an element were placed at separate position in the Mendeleev’s

Periodic table

(D) None of the ​

Answer 1

Answer:

heya

Explanation:

option C is incorrect.

He didnt mention abt isotopes

mark it❤tq

Answer 2

Explanation:

the answer is (a)

I hope it is correct...