Select correct statement: (a) when a covalent bond is...

Select correct statement:
(a) when a covalent bond is formed, transfer of electrons takes place
(b) pure $\mathrm{H}_{2} \mathrm{O}$ does not contain any ion
(c) a bond is formed when attractive forces overcome repulsive forces
(d) HF is less polar than $\mathrm{HBr}$

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Key Concepts

Covalent Bonding

Covalent bonding involves the sharing of electrons between atoms rather than the complete transfer of electrons. This type of bond forms when atoms achieve a stable electron configuration through shared electrons, leading to molecule formation without the creation of charged species.

Ionic Bonding

Ionic bonding is characterized by the complete transfer of electrons from one atom to another, resulting in the formation of positively and negatively charged ions. These oppositely charged ions attract each other through electrostatic forces to form an ionic compound.

Chemical Bond Formation via Attractive Forces

The formation of a chemical bond is fundamentally driven by attractive forces overcoming repulsive forces between atoms or ions. When the net attractive interactions (such as electrostatic attractions or orbital overlaps) between particles are strong enough to counteract any repulsive interactions (like electron-electron or nucleus-nucleus repulsions), a stable bond or molecule is formed.

Molecular Polarity

Molecular polarity refers to the uneven distribution of electron density within a molecule, which is influenced by differences in electronegativity between bonded atoms and the molecule’s geometry. This uneven distribution results in a dipole moment, affecting properties such as solubility and reactivity.

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