Question

out of Na2o and k2o which is more basic and why?​

Answer 1

As we go down the group of the electopositive metals in the periodic table the size of the atomic radius increases resulting in the decrease in the control over the outermost electrons. So in comparison to Na2O it becomes easier for K2O to lose a pair of electrons in view of larger atomic radius of K and thus K2O is a stronger (Lewis) base. Both are basic oxides being anhydrides of caustic soda (NaOH) and caustic potash (KOH). Na2O + H2O = 2NaOH. K2O + H2O = 2KOH.

Answer 2

Answer:

K2O is more basic than Na2O.

As we know that, on going down the group in a periodic table,basicity increases.

AND on dissolving these compounds in water ,

We get KOH and NaOH respectively, and we know that First one is more basic than the later one.