Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The correct order of ionization enthalpies
A
Si 
Ge 
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
The first ionization enthalpy of lead is more than that of tin because
of lanthanoid contraction. The atomic size of lead and tin are almost equal, hence, charge density is more in case of lead due to more charged. 
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