Understanding Molecular Polarity

What determines the polarity of a molecule?

• The number of atoms in the molecule

• The bond polarity and molecular symmetry

• Only the type of atoms involved

• The color of the molecule

How does electronegativity change across the periodic table?

• It decreases to the right and up

• It increases to the left and down

• It remains constant

• It increases to the right and up

In a polar bond, which atom acquires a partial negative charge?

• The atom with higher electronegativity

• The atom with more protons

• The atom with lower electronegativity

• The atom with less mass

What is a dipole moment?

• A measure of the weight of a molecule

• A measure of the color of a molecule

• A measure of net polarity between atoms

• A measure of the size of a molecule

Which of the following is a nonpolar diatomic molecule?

• HCl

• Cl2

• CO

• HF

What determines the polarity of polyatomic molecules?

• Bond polarity and molecular symmetry

• The color of the molecule

• Only the number of atoms

• Only the type of bonds

Why is carbon dioxide considered nonpolar?

• It has symmetrical dipole moments

• It has different outer atoms

• It has a bent shape

• It has lone pairs on the central atom

Which molecule is polar due to its asymmetrical shape?

• BF3

• NH3

• CH4

• CO2

What is the SNAP method used for?

• Determining the weight of molecules

• Determining the polarity of molecules

• Determining the color of molecules

• Determining the size of molecules

Which of the following molecules is nonpolar?

• HCl

• CH4

• NH3

• H2O