Covalent Bond formed by the Unsymmetrical sharing of electrons is called:
Covalent Bond formed by the Unsymmetrical sharing of electrons is called:
The correct option is C Polar Covalent Bond
Covalent Bond formed by the Unsymmetrical sharing of electrons is called Polar Covalent Bond.The bond between two unlike atoms, which differ in their affinities for electrons is said to be a polar covalent bond. When a covalent bond is formed between two atoms of different elements, the bonding pair of electrons will lie more towards the atom, which has more affinity for electrons. As the said electron pair do not lie exactly midway between the two atoms(i.eunequal or unsymmetrical sharing of electrons), the atom with higher affinity for electrons develops a slight negative charge and the atom with lesser affinity for electrons, a slight positive charge. Such molecules are called 'polar molecules'.In the hydrogen chloride (HCl) molecule, the bonding of hydrogen and chlorine atoms lie more towards Cl atom (because Cl is more electronegative) in the shared pair of electrons. Therefore, Cl atom acquires a slight negative charge, and H atom a slight positive charge. This causes the covalent bond between H and Cl to have an appreciable ionic character.Hence option A is correct.
Covalent Bond formed by the Unsymmetrical sharing of electrons is called Polar Covalent Bond.The bond between two unlike atoms, which differ in their affinities for electrons is said to be a polar covalent bond. When a covalent bond is formed between two atoms of different elements, the bonding pair of
electrons will lie more towards the atom, which has more affinity for electrons. As the said electron pair do not lie exactly midway between the two atoms(i.eunequal or unsymmetrical sharing of electrons), the atom with higher affinity for electrons develops a slight negative charge and the atom with lesser affinity for electrons, a slight positive charge. Such molecules are called 'polar molecules'.In the hydrogen chloride (HCl) molecule, the bonding of hydrogen and chlorine atoms lie more towards Cl atom (because Cl is more electronegative) in the shared pair of electrons. Therefore, Cl atom acquires a slight negative charge, and H atom a slight positive charge. This causes the covalent bond between H and Cl to have an appreciable ionic character.Hence option A is correct.
