Question

ce3+ is more basic than ce4+ why?​

Answer 1

Answer:

This is because extracting 4 electrons from an atom requires huge amount of energy. ... It requires a really strong oxidising agent to oxidise state 3 to state 4 which must have the electron gain enthalpy greater than the ionisation energy of the Ce(III) which can provide enough energy to knock out electron from Ce(III).

Answer 2

$Ce^{3+}$ is more basic than $Ce^{4+}$ because-

• A base is an acid neutralizer that can accept hydrogen ions in water. Actually, the character of basicity is directly proportional to the size of the cation. If the size of the cation is larger then the basic character will be greater too.
• We also know that the cation size increases with the decrease in the positive charge of the cation. So, for those reasons $Ce^{3+}$ is larger than the  $Ce^{4+}$. Hence, $Ce^{3+}$ is more basic than the $Ce^{4+}$.
• The property of being a base in chemistry (not an acid) is known as basicity

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