MCQ
The maximum valency of an element with atomic number $7$ is
- A$2$
- ✓$5$
- C$4$
- D$3$
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${\left[ {\begin{array}{*{20}{c}}
{\,\,\,\,\,\,O} \\
{\,\,\,\,\,\,||} \\
{C{H_2} = N = O}
\end{array}} \right]^\Theta }$