Advertisements
Advertisements
Question
Which of the following trend is correct with respect to the reactivity of alkali metal oxides with water?
Options
\[\ce{Li2O > Na2O > K2O > Rb2O > Cs2O}\]
\[\ce{Cs2O > Rb2O > K2O > Na2O > Li2O}\]
\[\ce{Li2O > Na2O > K2O > Cs2O > Rb2O}\]
\[\ce{Na2O > K2O > Li2O > Rb2O > Cs2O}\]
MCQ
Solution
\[\ce{Cs2O > Rb2O > K2O > Na2O > Li2O}\]
Explanation:
Since alkali metal oxides get more reactive with water as they move down the group, explosive reactions between Rb2O with water and Cs2O with water occurs. Hence, the correct reactivity order is \[\ce{Cs2O > Rb2O > K2O > Na2O > Li2O}\].
shaalaa.com
Alkali Metals and Alkaline Earth Metals
Is there an error in this question or solution?
