Mendeleev's Periodic Table

Q. Which of the following statement is incorrect regarding the Mendeleev's periodic table?

1. It has made the study of elements easier and systematic.
2. It has helped in correcting the doubtful atomic weights.
3. It has paved the way for the discovery of new elements.
4. Isotopes of the elements were placed at the same position in the periodic table.

Q. One of the major demerits of Mendeleev’s Periodic Table is:

1. He arranged the known elements in the order of their increasing atomic number
2. Mendeleev's periodic table was unable to locate hydrogen in the periodic table
3. It helped in predicting the discovery of new elements.
4. None of the above

Q.

Mendeleev predicted the element eka-silicon, meaning beyond silicon, which was later found to be Phosphorous.

1. True
2. False

Q. Which of the following is drawback of Mendeleev’s periodic table :

1. He arranged the known elements in the order of their increasing atomic masses
2. He helped in predicting the discovery of new elements
3. Iodine having lower atomic mass than Tellurium was placed ahead of Tellurium.
4. None of the above

Q. Which of the following is drawback of Mendeleev’s periodic table :

1. He arranged the known elements in the order of their increasing atomic masses
2. He helped in predicting the discovery of new elements
3. Iodine having lower atomic mass than Tellurium was placed ahead of Tellurium.
4. None of the above