JEE Main 2017 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties JEE Main 2017

Both lithium and magnesium display several similar properties due to the diagonal relationship; however, the one which is incorrect is:

(1)Both form soluble bicarbonates
(2)Both form nitrides
(3)Nitrates of both Li and Mg yield and on heating
(4)Both form basic carbonateCorrect

Answer: (4)

Solution

Check each claimed similarity. **(1)** The bicarbonates of both lithium and magnesium exist only in solution and are soluble — correct. **(2)** Both react directly with nitrogen on heating to give nitrides, and ; this is one of the classic diagonal-relationship facts, lithium being

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Question ID VK-115712