A metal ribbon ' $X$ ' burns in oxygen with a dazzling white flame forming a white ash ' $Y$ '. The

Question

A metal ribbon ' $X$ ' burns in oxygen with a dazzling white flame forming a white ash ' $Y$ '. The correct description of $X, Y$ and the type of reaction is\

Professor PC Thomas Classes · Answer

(b):Magnesium metal, $\mathrm{Mg}(X)$ burns in oxygen with a dazzling white flame forming a white ash, $\mathrm{MgO}(\mathrm{Y})$. $$ 2 \mathrm{Mg}+\mathrm{O}_{2} \longrightarrow 2 \mathrm{MgO} $$ This is a type of combination reaction.\