MCQ
The outer most electronic configuration of the most electronegative element is:
- A$\ce{ns^2 np^3}$
- B$\ce{ns^2 np^4}$
- ✓$\ce{ns^2 np^5}$
- D$\ce{ns^2 np^6}$
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$A\xrightarrow[(ii)\;H_3O^+]{(i)\;CH_3MgBr}B\xrightarrow[573\;K]{Cu}2-$methyl $2-$butene
The mass percentage of carbon in $A$ is
