MCQ
Strongest nucleophile is
- A

- B

- ✓

- D$\begin{matrix}
O \\
|| \\
C{{H}_{3}}-C-\overset{\overset{\circleddash }{\mathop{\centerdot \,\,\centerdot }}\,}{\mathop{C}}\,{{H}_{2}} \\
\end{matrix}$




$Image$
Stability order of carbocations $=(3)>(1)>(4)>(3)$
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$(i)$ Magnetic quantum no. $(m_l )$ gives information about the spatial orientation of orbitals with respect to standard set of co-ordinate axis.
$(ii)$ Electron spin quantum no. is represented by '$s$' and have value' $\frac{1}{2}$ '
$(iii)$ Principal quantum no. $(n)$ determine the size of the orbitals and also to a large extent of the energy of the orbitals.