IIT JEE , AIEEE Forum - Chemistry , Organic Chemistry

mukool.sitara

basic strength..............

a)MgO<BeO<CaO<BaO

b)BeO<MgO<CaO<BaO

c)BaO<CaO<MgO<BeO

d)CaO<BaO<BeO<MgO

answer the quetion with reason pls

thank u

mukool.sitara

sorry i will post the question later

here is the question is posted ans the question with reason

mukundmadhav

The answer is b.. As ionic nature of oxide increases, basicity increases

tarinbansal

The answer is b.

Explanation of mukundmadhav is correct and it also follows from the general periodic trends.
As far as inorganic chem is concerned, U must know the general periodic trends.It helps a lot becoz in inorganic chem U wont find a same reason as the explanation for diff questions of same type.

mukool.sitara

thank you friends

ashish040191

i think basic strength can be judged on the basis of ease of giving OH^- with water on reacn.

As Ba is lowest in 2nd group. ther4 bond between Ba & O is most ionic amongst given. As we go above basic strenth dec. as covalent char. incr. in bond.(ther4 less interaction with water)

since water is apolar solvent, it readily reacts with ionic compounds(giving OH^-) hence, b is ans

Ask & Discuss Questions with Community & Experts