JEE Main Solved Paper 2017 Question 10

Question: Both lithium and magnesium display several similar properties due to the diagonal relationship ; however, the one which is incorrect is: JEE Main Solved Paper-2017

Options:

A) Both form basic carbonates

B) Both form soluble bicarbonates

C) Both form nitrides

D) Nitrates of both Li and Mg yield $ N{O_2} $ and $ {O_2} $ on heating

Show Answer

Answer:

Correct Answer: A

Solution:

  • Mg can form basic carbonate like $ 5M{g^{+2}}+6CO_3^{2-}+7H _2O $ $ \to 4MgCO _3,Mg{{(OH)}_2}.5H _2O\downarrow +2HCO_3^{-} $ While Li can form only carbonate $ (Li _2CO _3) $ not basic carbonate.