MCQ
The correct order of the first ionization enthalpy is
- AAl > Ga > Tl
- BGa > Al > B
- CB > Al > Ga
- DTl > Ga > Al
✓
Answer
(i) due to lanthanide contraction $T \ell$ has more I.E. as compared to Ga and $A \ell$
(ii) due to scandide contraction Ga has more I.E. as compared to $A \ell$
(ii) due to scandide contraction Ga has more I.E. as compared to $A \ell$
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