Lewis structures, polarity, IMFs

Front

What are Lewis structures?

Back

Lewis structures are diagrams that represent the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.

Front

What is polarity in chemistry?

Back

Polarity refers to the distribution of electrical charge over the atoms joined by the bond. A polar molecule has a net dipole moment due to the presence of polar bonds that do not cancel out.

Front

What are London dispersion forces?

Back

London dispersion forces are weak intermolecular forces that arise from temporary dipoles in molecules, which are stronger in larger atoms or molecules.

Front

Which molecule has the strongest London forces: F2, Br2, I2, or Cl2?

Back

I2 has the strongest London forces due to its larger size and greater number of electrons.

Front

How do you determine if a molecule is polar or nonpolar?

Back

To determine if a molecule is polar or nonpolar, assess the symmetry of the molecule and the electronegativity differences between the atoms.

Front

What is the correct Lewis dot structure for the molecule fluorine (F2)?

Back

The correct Lewis dot structure for F2 shows two fluorine atoms each with three lone pairs and one bond between them.

Front

What is the formula for a nonpolar molecule?

Back

CBr4 is an example of a nonpolar molecule because its symmetrical shape allows the dipoles to cancel out.

Front

How many valence electrons does phosphorus have?

Back

Phosphorus has 5 valence electrons.

Front

What is the significance of valence electrons in bonding?

Back

Valence electrons are the electrons in the outermost shell of an atom and are involved in forming bonds with other atoms.

Front

What is a dipole moment?

Back

A dipole moment is a measure of the separation of positive and negative charges in a molecule, indicating its polarity.