Front

What are dispersion forces?

Back

Dispersion forces, also known as London dispersion forces, are weak intermolecular forces that arise from temporary fluctuations in electron distribution within atoms or molecules, leading to temporary dipoles.

Front

Which noble gas has the highest boiling point and why?

Back

Xenon (Xe) has the highest boiling point among noble gases due to having more electrons, which leads to stronger dispersion forces.

Front

What type of intermolecular force is present in H₂S?

Back

H₂S exhibits dipole-dipole intermolecular forces due to the polar nature of the molecule.

Front

What is the likely state of a nonpolar molecule at room temperature?

Back

Nonpolar molecules are typically gases at room temperature due to weak intermolecular forces.

Front

What information is crucial for examining intermolecular forces and polarity?

Back

Electronegativity is crucial for examining intermolecular forces and polarity, as it indicates how strongly an atom attracts electrons.

Front

What partial charge does fluorine acquire in HF due to its electronegativity?

Back

Fluorine acquires a partial negative charge (dipole) in HF because it is more electronegative than hydrogen.

Front

Define electronegativity.

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

What is the relationship between the number of electrons and boiling point in noble gases?

Back

In noble gases, an increase in the number of electrons generally leads to stronger dispersion forces and a higher boiling point.

Front

What type of intermolecular forces are stronger: dipole-dipole or dispersion forces?

Back

Dipole-dipole forces are generally stronger than dispersion forces due to the permanent dipoles in polar molecules.

Front

How do intermolecular forces affect the physical state of a substance?

Back

Stronger intermolecular forces typically result in higher boiling and melting points, influencing whether a substance is a solid, liquid, or gas.