Question

Differentiate between covalent bonds and coordinate covalent bonds?

Answer 1

A covalent bond is formed by two atoms sharing a pair of electrons. The atoms are held together because the electron pair is attracted by both of the nuclei. ... Aco-ordinate bond (also called a dative covalent bond) is a covalent bond (a shared pair of electrons) in which both electrons come from the same atom.

Answer 2

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Here is your answer

Covalent bond : The bond formed between two atoms by equal contribution of electrons and mutual sharing of electrons pair is called covalent bond

CO ordinate covalent bond :

» It is a special type of covalent bond in this bond an electron pair is shared by the two atoms but the shared electron pair is contributed by only one of the two atoms

»After sharing it becomes common property of both the atoms

»The atom which contributes the electron pair is called donor and the atom which accepts the electron pair for sharing is called acceptor

» The donar atom must have one or two lone pairs of electrons while the acceptor atom is short of two electrons to get it's octet

» It is represented by an arrow mark from donor to acceptor

eg: Formation of the ammonia ion

» In NH3 nitrogen has a lone pair of electrons and H+ has vacant orbital. So NH3 donates lone pair of electrons to H+ ion and forms NH4+ ion

Properties :

These compounds dissolves in non polar solvents like benzene CCl4

These compounds do not conduct electricity