MCQ
The order of filling of electrons in the orbitals of an atom will be
- A$3d,\,4s,\,4p,\,4d,\,5s$
- ✓$4s,\,3d,\,4p,\,5s,\,4d$
- C$5s,\,4p,\,3d,\,4d,\,5s$
- D$3d,\,4p,\,4s,\,4d,\,5s$
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$\begin{array}{*{20}{c}}
{C{H_3} - CH - CH - C{H_2} - C{H_3}} \\
{\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,CN\,\,\,\,\,\,\,\,\,CH = C{H_2}\,\,}
\end{array}$