MCQ
Wavelength of red light is absorbed by the complex
- A$[Cu(CN)_4]^{2-}$
- ✓$[Cu(NH_3)_4]^{2+}$
- C$CuSO_4$
- D$Cu(CN)_2$
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| Column $A$ | Column $B$ |
| $(i) \;\mathrm{Na}_{2} \mathrm{O}$ | $(a)$ Neutral |
| $(ii) \;\mathrm{Al}_{2} \mathrm{O}_{3}$ | $(b)$ Basic |
| $(iii)\;\mathrm{N}_{2} \mathrm{O}$ | $(c)$ Acidic |
| $(iv)\;\mathrm{Cl}_{2} \mathrm{O}_{7}$ | $(d)$ Amphoteric |
Which of the following options has all correct palrs