234- In the complete combustion of stone, what is the total change in the oxidation numbers of carbon atoms? (1) $1Y$ (2) $1f$ (3) $1\varphi$ (4) $1\Lambda$
\textbf{234-} In the complete combustion of stone, what is the total change in the oxidation numbers of carbon atoms?
\medskip
\hspace{2cm} (1) $1Y$ \hspace{3cm} (2) $1f$ \hspace{3cm} (3) $1\varphi$ \hspace{3cm} (4) $1\Lambda$
\medskip