MCQ
The condition for a stable wave is
- A$n\lambda = 6\prod r$
- B$n\lambda = \frac{1}{2}\prod r$
- ✓$n\lambda = 8\prod r$
- D$n\lambda = 4\prod r$
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$(A)$ $\left[ Ni \left( H _{2} O \right)_{2}( en )_{2}\right]^{2+}$
$(B)$ $\left[ Ni \left( H _{2} O \right)_{4}(\text { en })\right]^{2+}$ and
$(C)$ $\left[ Ni ( en )_{3}\right]^{2+}$ is ...... .