wiz-icon
MyQuestionIcon
MyQuestionIcon
14
You visited us 14 times! Enjoying our articles? Unlock Full Access!
Question

How would you account for the following:
(i) Many of the transition elements are known to form interstitial compounds.
(ii) The metallic radii of the third (5d) series of transition metals are virtually the same as those of the corresponding group members of the seconds (4d) series.
(iii) Lanthanoids form primarily +3 ions, while the actinoids usually have higher oxidation states in their compounds, +4 or even +6 being typical.

Open in App
Solution

I) Transition metals exist in hcc geometry in which there is vacant spaces. In these vacant spaces the elements like C, H & O forms compounds called interstitial compounds.
II) Due to lanthanide contraction, the metallic radii of the third (5d) series of transition metals are virtually the same as those of the corresponding group members of the seconds (4d) series.
"The steady decrease in the values of the radii of M3+ cations in the lanthanide series is called as Lanthanide contraction."
III) This is because of the compareble energies of 5f, 6d and 7s orbitals so all of them can participate.

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Actinoids
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon