JEE Main 2017 · 2 Apr · Shift 1 · Chemistry Q41

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ChemistrySingle correct+4 / -1Question 41 of 90

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

both form nitrides

nitrates of both Li and Mg yield

\ce{NO2}

and

\ce{O2}

on heating

both form basic carbonates

both form soluble bicarbonates

Answer and worked solution

Official answer: C

Magnesium forms a basic carbonate, but lithium forms only the normal carbonate $\ce{Li2CO3}$ , so (3) is the incorrect statement. Both form nitrides ( $\ce{Li3N}$ , $\ce{Mg3N2}$ ), both nitrates give $\ce{NO2}$ and $\ce{O2}$ , and both bicarbonates exist in solution.

Topics:Alkali metals Alkaline earth metals

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JEE Main 2017 · 2 Apr · Shift 1, Chemistry question 41