NEET · Chemistry · STD 12 - 4. d and f- block elements
Gadolinium has a low value of third ionisation enthalpy because of \(......\)
- A high exchange enthalpy
- B high electronegativity
- C high basic character
- D small size
Answer & Solution
Correct Answer
(A) high exchange enthalpy
Step-by-step Solution
Detailed explanation
\({ }_{64} Gd =[ Xe ] 6 s ^{2} 4 f ^{7} 5 d ^{1}\) \(Gd ^{+2}=[ Xe ] 4 f ^{7} 5 d ^{1}\)
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