Saved Bookmarks
| 1. |
Justifythe followijngstatement . " Elementsof the firsttransitionseriespossesmanypropertiesdifferent fromthose of heaviertransitionelements " |
|
Answer» Solution :Theheavier transitionelements belongto fourth(4d ) , fifth (5d )and SIXTH (6d)transitionseries. Theirpropertiesare expectedto be differentformthe elementsbelonging to the first(3D)seriesdue tofollowingreasons. (i) ATOMIC :radii: SIZEOF thetransitionthoseof the correspondingelementof thefirsttransitionseriesthoughthoseof 4dand 4d seriesare verycloseto each other. (ii) Ionisationenthalpyof 5dseriesare higherthan thecorrespondingelement of 3d and4d series . (iii) A tomisationhigherthan the correspondingelements of tehfirstseries. (iv)the elementof the firsttransitionseriesgenerally formlow orhighspincomplexes. dependinguponhte higherof ligandfiled. Howeverthe HEAVIER transitionelementsform lowspincomplexesirrespectiveof the strength ofligandfiled. |
|