Assumptions and Limitations of Law of Octaves

Q. Question 1
Upto which element, the Law of Octaves was found to be applicable

(a) Oxygen
(b) Calcium
(c) Cobalt
(d) Potassium

Q. Which of the following statements is correct?

1. Law of octaves was first given by Mendeleev.
2. Law of octaves worked quite well for heavier elements but failed for lighter elements.
3. Law of octaves failed for both lighter elements and heavier elements.
4. Law of octaves worked quite well for lighter elements but failed for heavier elements.

Q.

What are the limitations of the Newlands law of octaves?

Q. According to Newlands’ law of octaves, the properties of lithium and sodium were found to be same.

1. False
2. True