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Problem
Assertion :
Li
2
SO
4
\text{Li}_2\text{SO}_4
Li
2
SO
4
does not form double salt like alum. Reason : Li reacts with
NH
3
\text{NH}_3
NH
3
gas to form
LiNH
2
\text{LiNH}_2
LiNH
2
.
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