Which of the following is incorrect about lithium ??

Options

A. LiOH is a strong base
B. Unlike other alkali metals, Li does not react with ethyne to from lithium ethynide.
C. Unlike other alkali metals, Li forms dilithium acetylide on heating with C.
D. Lithium has a greater tendency to form complexes than other alkali metals.

Answer

A

Explanation

LiOH is a weak base because it is only sparingly soluble in water while the hydroxides of other alkali metals are strong bases as they are more soluble in water.
`2M+CH-=CHoverset(liq." "NH_(3))tooverset(+)(M)overset(-)(C)-=overset(-)(C)overset(+)(M)+H_(2)`
`(M=Na,K,Rb,Cs)`
`2LiJ+2Coverset(Delta)tounderset("Dilithium acetylide")(Li^(+)overset(-)(C)-=overset(-)(C)Li)`