S Block Elements Question 87
Question: Incorrect statement is:
Options:
A) $ NaHCO_3 $ and $ KHCO_3 $ have same crystal structure
B) On heating $ LiNO_3 $ decomposes into $ Li_2O $ and $ NO_2 $
C) Among alkali metals, $ Li $ metal impart red colour to flame
D) $ Li_2SO_4 $ does not form alum
Show Answer
Answer:
Correct Answer: A
Solution:
[a] The crystal structures of $ NaHCO_3 $ and $ KHCO_3 $ both show hydrogen bonding but are different.
In $ NaHCO_3, $ the $ HCO_3^{-} $ ions are linked into an infinite chain, while in $ KHCO_3, $ a dimeric anion is formed.
BETA
