Newland's Law of Octaves

Q. How many elements are present in Newlands periodic table?

1. Sixty
2. Fifty seven
3. Fifty eight
4. Fifty six

Q.

According to Newlands’ Law of Octaves, the properties of lithium and sodium were found to be same because sodium is the eighth element after lithium.

1. False

2. True

Q.

(a)Explain the ‘Newlands’ Law of octaves.

(b)Why was the law discarded?

Q. In Newland's table, cobalt and were placed in the same column along with fluorine, chlorine and bromine.

1. iron
2. sodium
3. nickel
4. carbon

Q.

What are the drawbacks of Newland’s Law of Octaves?

(A) The law of octaves was found to be applicable only till calcium. It was not applicable to elements of higher atomic masses.

(B) Some unlike elements were placed in same column

(C) Some similar elements were placed farther apart.

1. A, B, C

2. A, B

3. C only

4. A only

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.

Newlands classification of elements did not include ________.

Q.

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

1. Li, Na

2. Be, Mg

3. B, Al

4. All of the above

Q. State true or false.
According to Newlands’ Law of Octaves, the properties of lithium and sodium were found to be same because sodium is the eighth element after lithium.

1. True
2. False

Q. Given below are a few elements arranged in the order of increasing atomic masses.
If every eighth element had properties similar to that of the first, according to Newlands’ Law of Octaves, identify such pairs.
(Note: At that time, noble gases were not discovered.)
| Li | Be | B | C | N | O | F | Na | Mg | Al | Si | P | S |

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

Q.

What is Newland’s law of Octaves.

Q.

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

1. Be, Mg

2. Li, Na

3. All of these

4. B, Al

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

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

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

Q. Does the Newlands law will be correct if we take aluminium as the first element

Q.

State the law of Octaves as given by Newlands

Q.

What is Newland’s law of Octaves.

Q.

Law of octaves was proposed by _______

1. D.I. Mendeleev

2. J.A.R.Newlands

3. J.W.Debereiner

4. Lothar Meyer

Q.

Upto which element, the law of octaves was found to be applicable?

Q.

The law of octaves was proposed by :-

1. Dobereiner

2. Mendeleev

3. Newland

4. Lother Meyer

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.

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

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

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. 8

2. 9

3. 6

4. 7

Q. The Newland's law of octaves for the classification of elements was not found to be applicable only up to the element:

(a) potassium
(b) calcium
(c) cobalt
(d) phosphorus