Question

1. The following is Newland's Octaves Table. Observe it and answer the following question
(a) Which of the element in 1st column has different properties from rest of the elements ?
(b) Which of the elements resemble with each other in second column.
(c) Pick up odd element in second last column.
(d) Pick up elements which have similar properties in last column.​

Answer 1

Answer:

(a) Co and Ni

(b) Li , Na and K possess similar chemical and physical properties i.e they resembles each other

(c)Cu is and odd element in second column

(d)O and S have similar properties in last column

Answer 2

The following is Newland's Octaves Table. Observe it and answer the following question

Explanation:

Newland’s Law of Octaves

• According To him when elements are arranged in order of increasing atomic masses the properties of eight elements are repetition of properties of first element.  

According to these properties eighth elements sodium should be similar to those of first element lithium.

1. (a)  The element in 1st column has different properties from rest of the elements ---->  Co and Ni

2.) The elements resemble with each other in second column----> Li, Na ,K

3. The odd element in second last column---->  Mn

4. The elements which have similar properties in last column:  O,S , Se