1.

Incorrect statement is :

Answer»

`NaHCO_(3) and KHCO_(3)` have same crystal structure
On heating `LiNO_(3)` decomposes into `Li_(2)O an NO_(2)`
AMONG ALKALI metals, Li metal impart RED colour flame
`Li_(2)SO_(4)` does not FORM alum

Solution :Li metal imparts carmine red colour flame due to emission spectrum.


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