Question

Which of the following pairs are chemically dissimilar?

              

                           (A) Na and K                             (B) Ba and Sr

                           (C) Zr and Hf                 (D) Ca and Zn.

Answer 1

Yes. Calcium and Zinc are dissimilar because other pairs are located in the same group, so they have same number of valence electrons, due to which most of their properties are same.

But Calcium and Zinc are located in different groups..hence they are dissimilar

Please follow to get more answers...

Answer 2

Option d is the correct answer because pairs in option a,b, and c are located in the same group. so that they all have same number of valence electrons so due to that most of their properties are same in nature but option d. Ca and Zn are not placed in same group so that their characteristics are chemically dissimilar