Saved Bookmarks
| 1. |
(i) A boy has reported the radii of Cu, Cu+ and Cu2+ as 0.96Å, 1.22Å and 0.72Å respectively. However, it has been noticed that he interchanged the values by mistake. Assign correct values to different species. (ii) Account for the difference in size of Na+ (0.96Å) and Mg2+ (0.65Å) both of which have the same number of electrons. |
|
Answer» (i) Cu = 1.22Å; Cu+ = 0.96Å; Cu2+ = 0.72Å. (ii) Mg2+ (0.65Å) is smaller than Na+ (0.96Å) because as the effective nuclear charge per electron increases, the electrons are more strongly attracted and pulled towards the nucleus which causes a decrease in size of the Mg2+ ion. |
|