Newlands' Law of Octaves

Q.

State Newlands law of octaves.

Q.

The Law of Octaves was applicable only up to element ________

Q. The law of octaves was proposed by:

1. Dmitri Ivanovich Mendeleev
2. Johann Wolfgang Döbereiner
3. Henry Moseley
4. John Alexander Newlands

Q.

State two achievements of the law of octaves.

Q. The law of octaves was proposed by:

1. Dmitri Ivanovich Mendeleev
2. Henry Moseley
3. Johann Wolfgang Döbereiner
4. John Alexander Newlands

Q.

The event which are repeated themselves after regular intervals of time are which events.

Q.

Law of octaves is proposed by________

Q.

State the Newland law of Octaves for the classification of elements.

Q. According to Newlands' law of octaves, the elements were arranged in the increasing order of their atomic masses.

1. False
2. True

Q. Newlands' Law of Octaves was applicable only upto

1. Potassium
2. Calcium
3. Sodium
4. Magnesium

Q. Find the incorrect statement about the Newlands’ Law of Octaves.

1. It was applicable only upto calcium
2. It was assumed that only 63 elements existed in nature
3. Elements were arranged in the order of their increasing atomic masses
4. The properties of every eighth element is a repetition of the first one

Q.

Give a one-word answer.

Classification in which the first and eight-element are similar.

Q.

State Newlands law of the octave. Support your answer with an example.

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

1. False
2. True

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

1. False
2. True

Q. Repetition of properties at regular intervals is known as periodicity.

1. True
2. False

Q.

What are the drawbacks of Newlands' law of octaves?

(A) The law of octaves was found to be applicable for elements with lower atomic masses.

(B) The position of hydrogen was not justifiable.

(C) Some unlike elements were placed in the same group.

1. A, B, C
2. A, B
3. A only
4. C only

Q.

What are the drawbacks of Newlands' law of octaves?

(A) The law of octaves was found to be applicable for elements with lower atomic masses.

(B) The position of hydrogen was not justifiable.

(C) Some unlike elements were placed in the same group.

1. A, B, C
2. A, B
3. A only
4. C only

Q. In Newland's law of octaves, the elements were arranged in increasing order of atomic mass.

1. False
2. True

Q.

Match the elements in column A with the elements on column B that would be having same properties according to law of octaves.

Q. Which of these pairs will have similar properties on the basis of law of octaves?

1. Beryllium and magnesium
2. Lithium and phosphorus
3. Carbon and silicon
4. Fluorine and chlorine

Q. Arrange the following elements in the increasing order of atomic masses based on Newlands' law of octaves.

1. H
2. Be
3. C
4. Li
5. B

Q. In Newland's law of octaves, the elements were arranged in increasing order of atomic mass.

1. False
2. True

Q. Arrange the following elements in the increasing order of atomic masses based on Newland's law of octaves.

1. C
2. B
3. Be
4. Li
5. H

Q. According to the Newland's law of octaves, identify the set of elements that do not possess similar properties.

1. Be, Mg
2. B, Al
3. O, P
4. Li, Na

Q. Which of the following belong to the group with notes Sa and Re as per Newland's Law of Octave?

1. Nitrogen
2. Fluorine
3. Chlorine
4. Boron
5. Carbon
6. Lithium
7. Sodium
8. Potassium