Question

explain nucleophilea and electrophiles with example?​

Answer 1

Electrophiles are greedy little molecules (or atoms). They are known to do anything for an electron pair (i.e. two electrons). They will happily grab and take any electron pairs from neighboring molecules or atoms. Okay, so this may be a gross exaggeration of what an electrophile does, but it's a great way to think about these molecules and how they behave in chemical reactions.

Electrophiles are atoms or molecules known to be electron deficient and that carry a partial (or fully) positive charge and will seek an electron pair to form a covalent bond. These species will seek an electron pair from organic molecules. The sites on these organic molecules are called 'electron rich.'

A great way to remember the definition of an electrophile is to think of them as 'electron loving.' From the definition of an electrophile, we can see that its primary reason for being an electron lover is due to the desire to form a covalent bond with another molecule. Let's see how this relates to their interaction with other molecules.

Answer 2

Answer:

(1) The species which are electron seeking species i.e. electron deficient species are called electrophiles or electrophilic centre

(2) A polyatomic electrophile has an electron deficient atom in it called the electrophilic centre.

(3) They are positively charged species like H^+, NO^+_2, or neutral molecules with incomplete octet of electrons like BF_3, AICl_3, etc.