Electronegativity and Intermolecular forces

What is electronegativity and how does it influence bonding between elements?

• Electronegativity is the measure of an atom's size and has no influence on bonding

• Electronegativity is the measure of an atom's ability to attract and hold electrons. It determines whether the bond will be ionic, polar covalent, or nonpolar covalent.

• Electronegativity is the measure of an atom's color and affects the strength of covalent bonds

• Electronegativity is the measure of an atom's mass and determines metallic bonding

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NGSS.HS-PS1-1

How does electronegativity predict the type of bonding between elements?

• Similar electronegativities form ionic bonds

• Electronegativity doesn't affect bonding type

• Similar electronegativities form covalent bonds, large differences form ionic bonds.

• Large differences in electronegativity form covalent bonds

How can electronegativity values predict the type of bond between two elements?

• Measuring the boiling point of the elements

• Comparing the electronegativity difference between two elements.

• Counting the number of valence electrons in the elements

• Looking at the atomic number of the elements

What are the properties of covalent substances?

• Gases, liquids, or soft solids; low melting and boiling points; do not conduct electricity

• Liquids; low melting and boiling points; conduct electricity

• Solids; high melting and boiling points; conduct electricity

• Gases; high melting and boiling points; conduct electricity

Compare intramolecular and intermolecular forces in covalent substances.

• Covalent substances have strong intramolecular and weak intermolecular forces.

• Covalent substances have no intramolecular forces, only intermolecular.

• Covalent substances have strong intramolecular and no intermolecular forces.

• Covalent substances have weak intramolecular and strong intermolecular forces.

What is the difference between intramolecular and intermolecular forces?

• Intramolecular forces are within a molecule, intermolecular forces are between molecules.

• Intramolecular forces are only in solids, intermolecular forces are only in gases.

• Intramolecular forces don't affect substance properties, intermolecular forces determine all properties.

• Intramolecular forces are between molecules, intermolecular forces are within a molecule.

What is the role of valence electrons in covalent bonds?

• Valence electrons do not play a role in covalent bonds.

• Valence electrons are shared to form covalent bonds.

• Valence electrons are lost or gained in covalent bonds.

• Valence electrons determine the color of the compound.

How does the difference in electronegativity between two atoms affect the bond's polarity?

• A large electronegativity difference results in a nonpolar bond.

• A small electronegativity difference results in a polar bond.

• A large electronegativity difference results in a polar bond.

• The electronegativity difference doesn't affect the bond's polarity.

What is the relationship between intermolecular forces and the boiling point of a covalent substance?

• There is no relationship.

• Stronger forces, lower boiling point.

• Stronger forces, higher boiling point.

• Forces determine the color, not the boiling point.

What is the primary difference between dipole-dipole interactions and Van der Waals forces?

• Dipole-dipole interactions occur between polar molecules, while Van der Waals forces occur between nonpolar molecules.

• Dipole-dipole interactions occur between nonpolar molecules, while Van der Waals forces occur between polar molecules.

• Dipole-dipole interactions and Van der Waals forces both occur between polar molecules.

• Dipole-dipole interactions and Van der Waals forces both occur between nonpolar molecules.