hat does the Valence bond theory state?
In valence bond theory, the atomic orbitals of individual atoms are combined to form chemical bonds.
What is the meaning of lone pair of electrons?
In chemistry, a lone pair refers to a pair of valence electrons that are not shared with another atom in a covalent bond and is sometimes called an unshared pair or non-bonding pair.
What is a hydrogen bond?
In hydrogen bonding, interaction involving a hydrogen atom located between a pair of other atoms having a high affinity for electrons.