MCQ
The most stable carbocation among the following is :
- A

- B

- C

- D





$Image$
Stability order of carbocations $=(3)>(1)>(4)>(3)$
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$2Zn + {O_2} \to 2ZnO;\Delta H = - 412\,J$
| $(n)$-$(l)$-$(m)$-$(s)$ | |
| $(i)$ | $(3)$-$(2)$-$(1)$- $(+1/2)$ |
| $(ii)$ | $(2)$-$(2)$-$(1)$- $(+1/2)$ |
| $(iii)$ | $(4)$-$(3)$-$(-2)$- $(-1/2)$ |
| $(iv)$ | $(1)$-$(0)$-$(-1)$- $(-1/2)$ |
| $(v)$ | $(3)$-$(2$-$(3)$- $(+1/2)$ |
Which of the following sets of quantum number is not possible ?
(Rounded-off to the nearest integer) $\left[ h =6.63 \times 10^{-34}\, Js , c =3.00 \times 10^{8} \,ms ^{-1}\right.$ $,$ $\left. N _{ A }=6.02 \times 10^{23}\, mol ^{-1}\right]$