Which of the following statements is incorrec | vedclass

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(C) . $NaHCO_3$ and $KHCO_3$ have different crystal structures; $NaHCO_3$ is monoclinic while $KHCO_3$ is monoclinic but with different parameters. $B

Vedclass · Accepted Answer

Among alkali metals,$Li$ metal imparts a red colour to the flame.

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(C) . $NaHCO_3$ and $KHCO_3$ have different crystal structures; $NaHCO_3$ is monoclinic while $KHCO_3$ is monoclinic but with different parameters. $B$. $LiNO_3$ decomposes on heating as $4LiNO_3 \rightarrow 2Li_2O + 4NO_2 + O_2$. $C$. $Li$ imparts a crimson red colour to the flame,not just red. $D$. $Li_2SO_4$ does not form alum because the $Li^+$ ion is too small to fit into the alum lattice structure. Given the options,the statement in $C$ is often considered the most technically incorrect due to the specific flame colour description,but $A$ is also factually incorrect as they have different structures. However,in many standard contexts,$C$ is the intended answer as $Li$ is specifically 'crimson red'.

Which of the following statements is incorrect?

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