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Question
In the group \[\begin{array}{cc}
\ce{R'}\phantom{.........}\\
\backslash\phantom{.........}\\
\ce{C = O}\\
/\phantom{........}\\
\ce{R}\phantom{.........}
\end{array}\], the carbonyl carbon is joined to other atoms by ____________.
Options
two sigma and one pi bonds
three sigma and one pi bonds
one sigma and two pi bonds
two sigma and two pi bonds
Solution
In the group \[\begin{array}{cc}
\ce{R'}\phantom{.........}\\
\backslash\phantom{.........}\\
\ce{C = O}\\
/\phantom{........}\\
\ce{R}\phantom{.........}
\end{array}\], the carbonyl carbon is joined to other atoms by three sigma and one pi bonds.
Explanation:
Three sigma bonds and one pi bond are formed by the carbonyl carbon.
\[\begin{array}{cc}
\ce{R'}\phantom{.........}\\
\backslashσ\phantom{.........}\\
\ce{C ->[π][σ] O}\\
/σ\phantom{........}\\
\ce{R}\phantom{...........}
\end{array}\]
