Question
Write the IUPAC names for the following : $\begin{array}{cc}
\phantom{........}\ce{H}\phantom{...}\ce{H}\phantom{........}\\
\phantom{...}|\phantom{...} \phantom{.}|\phantom{....}\\
\ce{H - C - C = O}\\
\phantom{...}|\phantom{...}\phantom{.}\phantom{....}\\
\phantom{......}\ce{H}\phantom{...}\ce{}\phantom{........}\\
\end{array}$
\phantom{........}\ce{H}\phantom{...}\ce{H}\phantom{........}\\
\phantom{...}|\phantom{...} \phantom{.}|\phantom{....}\\
\ce{H - C - C = O}\\
\phantom{...}|\phantom{...}\phantom{.}\phantom{....}\\
\phantom{......}\ce{H}\phantom{...}\ce{}\phantom{........}\\
\end{array}$