False Fact: Solid NaCl is a good conductor of electricity.

Explanation:

Molecule represents a more stable state as compared to the individual atoms:
When two or more atoms combine to form a molecule, they do so to attain a more stable electron configuration. For example, when two hydrogen atoms combine to form a hydrogen molecule, they share their electrons to attain a stable configuration of helium. This sharing of electrons leads to the formation of a covalent bond between the two atoms, which is stronger than the individual atoms. Therefore, a molecule represents a more stable state as compared to the individual atoms.

Formation of potassium iodine involves decrease in energy:
During the formation of a chemical bond, energy is either released or absorbed. If the energy is released, it is called an exothermic reaction, and if it is absorbed, it is called an endothermic reaction. In the case of the formation of potassium iodide, energy is released, making it an exothermic reaction. This release of energy indicates that the product (potassium iodide) is more stable than the reactants (potassium and iodine).

Covalency possesses directional properties:
A covalent bond is formed by the sharing of electrons between two atoms. The sharing of electrons is not always equal between the two atoms, resulting in the formation of a polar covalent bond. In a polar covalent bond, the shared pair of electrons is closer to the more electronegative atom, resulting in a partial negative charge on that atom and a partial positive charge on the other atom. This partial charge distribution gives the covalent bond directional properties, which means that the bond has a specific orientation in space.

Solid NaCl is not a good conductor of electricity:
Solid NaCl (table salt) does not conduct electricity because the ions in the crystal lattice are held together by strong electrostatic forces, and they are not free to move. However, when NaCl is dissolved in water or melted, the ionic bonds are broken, and the ions are free to move, making it a good conductor of electricity. Therefore, the statement that solid NaCl is a good conductor of electricity is false.

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