MCQ
Electronic configuration of chalcons in their outermost orbit is
- A${s^2}{p^3}$
- ✓${s^2}{p^4}$
- C${s^2}{p^5}$
- D${s^2}{p^6}$
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| $I$ | $II$ | |
| $[Cr(H_2O)_6]^{+2}$ | $[Cr(H_2O)_6]^{+3}$ | $(a)$ |
| $[Fe(H_2O)_6]^{+3}$ | $[Fe(CN)_6]^{-3}$ | $(b)$ |
| $[Fe(CN)_6]^{+3}$ | $[Ru(CN)_6]^{-3}$ | $(c)$ |
| $[NiF_6]^{-4}$ | $[NiF_6]^{-2}$ | $(d)$ |
$(1)$ Bromine water $(2)$ $\mathrm{Br}_{2}$ in $\mathrm{CS}_{2}, 273 \mathrm{~K}$ $(3)$ $\mathrm{Br}_{2} / \mathrm{FeBr}_{3}$ $(4)$ $\mathrm{Br}_{2}$ in $\mathrm{CHCl}_{3}, 273 \,\mathrm{~K}$
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