MCQ
Which graph shows zero activation energy
- A

- B

- ✓

- D






Hence, option $C$ is correct.
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How can this reaction is made to proceed in forward direction?


Assertion $(A)$: There is a considerable increase in covalent radius from $\mathrm{N}$ to $\mathrm{P}$. However from $As$ to $Bi$ only a small increase in covalent radius is observed.
Reason $(R)$: covalent and ionic radii in a particular oxidation state increases down the group.
In the light of the above statement, choose the most appropriate answer from the options given below: