MCQ
The number of electrons in nickel atom having $m = 0$ will be
- A$14$
- B$11$ or $12$
- C$5$ or $6$
- ✓$13$ or $14$
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$(A)$ $E, F$ and $\mathrm{G}$ are resonance structures
$(B)$ $E, F$ and $E, G$ are tautomers
$(C)$ $\mathrm{F}$ and $\mathrm{G}$ are geometrical isomers
$(D)$ $\mathrm{F}$ and $\mathrm{G}$ are diasteromers
$(i)$ benzene $(ii)$ toluene
$(iii)$ chlorobenzene $(iv)$ phenol