Limitations of Law of Octaves

Q.

Which of the following sets of elements follows Newlands octave rule?

1. Be, Mg, Ca

2. Na, K, Rb

3. F, Cl, Br

4. B, Al, Ga

Q.

What are the achievements and limitations of Newlands law of octave?

Q.

State the importance of Newlands law of octaves

Q. In Newlands' periodic table, some elements with similar properties were placed in different groups.

1. True
2. False

Q.

2. Why was Newlands law of octaves discarded?

Q. Newlands assumed that only 56 elements existed in nature

1. True
2. False

Q. Newlands assumed that only 56 elements existed in nature

1. True
2. False

Q. In Newlands' periodic table, some elements with different properties were placed in the same group.

1. True
2. False

Q. In Newlands' periodic table, some elements with different properties were placed in the same group.

1. True
2. False

Q. What are the drawbacks of Newland’s law of octaves?

1. Some elements were placed in same slot.
2. His law was only applicable for elements till calcium.
3. He did not justify the position of hydrogen.
4. Some similar elements were placed farther apart.

Q. Noble gases could not fit into Newlands' octave pattern.

1. False
2. True

Q. Newlands' law of octaves was valid only up to calcium.

1. True
2. False

Q. Noble gases could not fit into Newlands' octave pattern.

1. False
2. True

Q. Newlands' classification of elements did not include _______ .

1. Metalloid
2. Metals
3. Non metals
4. Noble gases