Question

Which of the following oxides is most basic in nature?
О Beo
OMgo
О сао
ОО
O Al₂O3​

Answer 1

Answer:

Explanation:

first find metal in the following options

and find oxidation number of metal in all

if you see in options all are metals

so find in each

if oxidation  number is 123 it is basic

thus this all are basic oxides

lets find acidic strength and do inverse

we know that acidic strength directly proportional to non metallic character

in 4 options al has more non metallic character

and after be , mg and ca

this acidic strength order of given oxides

if you inverse the above order you will get basic strength

so cao > mgo > beo > al2o3