Question

Select incorrect statement:
(a) Homolytic fission results in the
formation of free radicals
(b) Heterolytic fission results in the
formation of Lewis acid and Lewis base
(c) Completion of the octet provides a
major driving force for the Lewis acid-
base reaction
(d) The steric bulky group increases
nucleophilicity.

b

Answer 1

Answer:

d

Explanation:

Answer 2

(d) The steric bulky group increases nucleophilicity

Explanation:

• A nucleophile should approach a carbon reaction center to create a bond and hence steric hindrance have affects the speed of reaction. Sterically hindered nucleophiles react at very slower rate than that of similarly charged, smaller nucleophiles which contain the identical nucleophilic element.
• Nucleophilicity Decreases also with Increasing Steric Hindrance (“Bulkiness”)
• Steric hindrance could be a consequence of steric effects and is that the slowing of chemical reactions thanks to steric bulk. Usually it is manifested in intermolecular reactions during which discussion of steric effects often concentrate on intramolecular interactions. Steric hindrance is casually exploited to regulate selectivity like slowing unwanted side-reactions.