Match the following Column-I Column-II (a) Hg2^2+ (p) Nucleophile (b) Al

step 1 Question is what? HG2 plus ALCL3, BR minus and H plus. Right? So, SG 2 plus 2, low acid, soft ac

Match the following Column-I Column-II (a)...

Match the following $$ \begin{array}{ll} \hline \text { Column-I } & \text { Column-II } \\ \hline \text { (a) } \mathrm{Hg}_2^{2+} & \text { (p) Nucleophile } \\ \text { (b) } \mathrm{AlCl}_3 & \text { (q) Catalyst } \\ \text { (c) } \mathrm{Br}^{-} & \text {(r) Lewis acid } \\ \text { (d) } \mathrm{H}^{+} & \text {(s) Soft acid } \\ & \text { (t) Electrophile } \\ \hline \end{array} $$

Match the following
$$
\begin{array}{ll}
\hline \text { Column-I } & \text { Column-II } \\
\hline \text { (a) } \mathrm{Hg}_2^{2+} & \text { (p) Nucleophile } \\
\text { (b) } \mathrm{AlCl}_3 & \text { (q) Catalyst } \\
\text { (c) } \mathrm{Br}^{-} & \text {(r) Lewis acid } \\
\text { (d) } \mathrm{H}^{+} & \text {(s) Soft acid } \\
& \text { (t) Electrophile } \\
\hline
\end{array}
$$

Key Concepts

Electrophile

An electrophile is a chemical species that accepts an electron pair from another compound during a chemical reaction. These species are typically electron deficient and are key targets in reactions such as nucleophilic substitutions or additions, where they facilitate bond formation.

Nucleophile

A nucleophile is a chemical species that donates an electron pair to form a chemical bond in reaction processes. Being electron-rich, nucleophiles typically attack electron-deficient centers, such as electrophilic atoms or groups, enabling the transformation of functional groups in organic chemistry.

Catalyst

A catalyst is a substance that accelerates a chemical reaction without being consumed in the process. It works by lowering the activation energy and providing an alternative pathway for the reaction, thereby increasing the efficiency and selectivity of the process.

Lewis Acid

A Lewis acid is defined as an electron pair acceptor. In contrast to Brønsted–Lowry acids which donate protons, Lewis acids can accept electrons to form coordinate covalent bonds, playing a crucial role in many chemical reaction mechanisms, including catalysis in organic synthesis.

HSAB Theory

HSAB (Hard and Soft Acids and Bases) Theory categorizes chemical species based on their polarizability and charge density. 'Soft acids' are more polarizable and have a tendency to interact with soft bases, which influences the stability and reactivity of complexes in chemical reactions.

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