A metal on combustion in excess air forms X . X upon hydrolysis with water yields along with another product . The metal is :
Li
Na
Mg
Rb
Action of air on alkali metals -
Tarnish rapidly when exposed to air, forming oxides, hydroxides and carbonates
- wherein
As ewe have learned in Alkline easth metal thatK,Rb andCsFrom super oxides on reaction with excess air
(excess)
Li
Option 2)Na
Option 3)Mg
Option 4)Rb
Study 40% syllabus and score up to 100% marks in JEE