MCQ
Which of the following has tetrahedral geometry?
- A$\left[ Ni \left( NH _3\right)_6\right]^{2+}$
- ✓$Ni ( CO )_4$
- C$\left[ Ni ( CN )_4\right]^{2-}$
- D$\left[ P ( CN )_4\right]^{2-}$
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Assertion $(A)$ : Vinyl halides do not undergo nucleophilic substitution easily.
Reason $(R)$ : Even though the intermediate carbocation is stabilized by loosely held $p-$ electrons, the cleavage is difficult because of strong bonding.
Given : $\frac{2.303 RT }{ F }=0.059\,V$