Multiple choice

A lone pair of electrons is present in:

  1. ioniic bond

  2. hydrogen bond

  3. co-ordinate bonding

  4. covalent bond
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is a special type of a covalent bond wherein the shared pair of electrons is supplied by only one of the bonding atoms. A lone pair of electrons is present in one of the atoms.e.g.Hydronium ion [H3O+ ] It is formed by the combination of water molecule and hydrogen ion. The oxygen atom in a water molecule has two lone pairs of electrons. It donates one pair to the hydrogen ion. Oxygen is thus the donor and hydrogen ion, the acceptor. The hydrogen ion carries over its charge to the hydronium ion.

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