Question

What do you understand by bond pairs and lone pairs of electrons?

Answer 1

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Your Answer :

When two atoms combine by sharing their one or more valence electrons, a covalent bond is formed between them.

The shared pairs of electrons present between the bonded atoms are called bond pairs.

All valence electrons may not participate in bonding. The electron pairs that do not participate in bonding are called lone pairs of electrons.

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Answer 2

Bond pairs:

• Bond pair is a pair of electrons that are in bond i.e shared by two atoms to form a covalent bond.

• In this the two electrons belong to two atoms.

• They are created due to sharing of electrons by two atoms.

Lone pairs:

• Lone pair is a pair of electrons that are not in bond i.e they do not take part in bonding.

• In this the two electrons belong to same atoms.

• They are created due to absence of empty orbitals.

Example:

In case of H₂O,

Two atoms bonded to central atom = Two bond pairs

Four electrons that do not participate in bonding = Two lone pairs.

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