Newlands Law of Octaves

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

1. True
2. False

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

1. False
2. True

Q. What were the limitations of Dobereiner’s classification ?

Q. Law of Octaves was applicable only upto:

1. Iron
2. Cesium
3. Nickel
4. Calcium

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

1. True
2. False

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

1. True
2. False

Q.

What is the chemical symbol for lead?

1. Ld

2. Pb

3. Xr

4. Sn

Q.

Which of the following is the symbol for iron?

1. Fe

2. O

3. C

4. Ir

Q.

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

(A) The law of octaves was found to be applicable for elements with higher 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 only
3. C only
4. A, B

Q.

According to Newlands’ Law of Octaves, identify the set of elements that possess similar properties.

1. Be, Mg

2. B, Al

3. All of these

4. Li, Na

Q. Newland's law of octaves can be applied to the set of elements consisting of:

1. Sodium, potassium, calcium
2. Beryllium, magnesium, calcium
3. Boron, nitrogen, carbon
4. Hydrogen, silicon, aluminium

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. Newland's law of octaves can be applied to the set of elements consisting of:

1. Beryllium, magnesium, calcium
2. Sodium, potassium, calcium
3. Boron, nitrogen, carbon
4. Hydrogen, silicon, aluminium

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

1. True
2. False

Q. How many elements were known at the time when Newland started arranging elements?

1. 54
2. 62
3. 68
4. 78

Q. Is the Newlands octaves also seen in the modern periodic table

Q.

X and Y are the two extreme elements of the series which obey Newland's law of octaves. How many elements are there in between X and Y?

1. 6

2. 7

3. 8

4. 9

Q. What are the limitations for Newlands' law of octaves?​

Q. Given below are a few elements arranged in the order of increasing atomic masses. Identify the pair of elements with similar properties according to Newland’s Law of Octaves.

1. C, Si
2. O, P
3. N, Si
4. Be, Na

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