Which one of the following statements related to Lanthanons is false:- 1. All r much more reactive than Aluminum. 2. ce(+4) solution are widely used as oxidizing agent in volumetric analysis. 3. Europium shows +2 oxidation state. 4. The nativity decreases as the ionic radius decreases from Pr.
Answer (1)
Student Expert
26th Dec, 2019
Hello Ishika
Option ( 1) is incorrect dear as all the lanthanoids are less reactive than aluminium. It is because lanthanoids are having high ionization potential values and shows inert pair effect. Lanthanoids are less reactive due to its small size and due to their small size their electrons are not easily participating in chemical reactions . For example.,lanthanoids show less tendency towards complex formation and less tendency towards the formation of oxides and hydroxides. So they are less reactive than aluminium and thus given option (1) is incorrect.
Thankyou
Option ( 1) is incorrect dear as all the lanthanoids are less reactive than aluminium. It is because lanthanoids are having high ionization potential values and shows inert pair effect. Lanthanoids are less reactive due to its small size and due to their small size their electrons are not easily participating in chemical reactions . For example.,lanthanoids show less tendency towards complex formation and less tendency towards the formation of oxides and hydroxides. So they are less reactive than aluminium and thus given option (1) is incorrect.
Thankyou
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