P-Block Elements Ques 581

Question: A metal X on heating in nitrogen gas gives Y. Y on treatment with $ H_2O $ gives a colourless gas which when passed through $ CuSO_4 $ solution gives a blue colour. Y is

Options:

A) $ Mg{{(NO_3)}_2} $

B) $ Mg_3N_2 $

C) $ NH_3 $

D) $ MgO $

Show Answer

Answer:

Correct Answer: B

Solution:

$ 3Mg+N_2\xrightarrow{\Delta }Mg_3N_2\xrightarrow{6H_2O} $ $ 3Mg{{( OH )}_2}+2NH_3; $ $ CuSO_4+4NH_3\to \underset{deepbluecolour}{\mathop{[ Cu{{( NH_3 )}_4} ]SO_4}} $



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