A) 35
B) 36
C) 27
D) 33
Correct Answer: D
Solution :
\[EAN\]\[=Z-\left[ \begin{align} & \text{No}\text{.}\,\,\text{of}\,\,{{\text{e}}^{\text{-}}}\,\,\text{lost}\,\,\text{in} \\ & \text{primary}\,\,\text{valency} \\ \end{align} \right]\text{+}\left[ \begin{align} & \text{No}\text{.}\,\,\text{of}\,\,{{\text{e}}^{\text{-}}}\text{gained}\,\,\text{by} \\ & \text{secondary}\,\,\text{valency} \\ \end{align} \right]\]\[=24-3(6\times 2)=33\]
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