MCQ
Gadolinium has a low value of third ionisation enthalpy because of $......$
- ✓high exchange enthalpy
- Bhigh electronegativity
- Chigh basic character
- Dsmall size
$Gd ^{+2}=[ Xe ] 4 f ^{7} 5 d ^{1}$
After losing $5 d$ electron $4 f$ has maximum exchange energy so Gd has low value of Third Ionisation energy
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$I :$ form sets of compounds which display different oxidation states of the metal
$II :$ form coloured ions in solution
$III :$ burn vigorously in oxygen
$IV :$ act as catalyst
$(I)$ Strong field ligand $(II)$ Weak field ligand
$(III)$ Mixed field ligand $(IV)$ Chelated ligand field
Choose the correct code