Polarity

Multiple Choice

Which of the following describes polarity?

• it refers to the overall distribution of electronic charge

• can be determined by bond polarities

• can be determined by molecular geometry

• All of the choices

Multiple Choice

Which of the following statements is NOT true about electronegativity?

• It the ability of an atom to attract electrons.

• Fluorine is the most electronegative.

• Cesium is the least electronegative.

• It uses the Pauling as its unit.

Multiple Choice

Among the choices, which is the most electronegative?

• Lithium

• Gold

• Oxygen

• Calcium

Multiple Choice

Among the choices, which is the least electronegative?

• Gold

• Oxygen

• Calcium

• Potassium

Match

Match the ΔEN and the type of bond.

• < 0.5

• 0.5 to 1.9

• > 1.9

Nonpolar covalent

Polar covalent

Ionic

• Nonpolar covalent

• Polar covalent

• Ionic

Multiple Choice

In molecules with more than one polar bond, what dictates the overall polarity?

• molecular geometry

• number of electrons

• electronegativity

• number of protons

Categorize

Options (13)

Bent

Trigonal pyramidal

See-saw

T-shaped

Square pyramidal

Trigonal planar

Tetrahedral

Trigonal bipyramidal

Seesaw

Octahedral

Square planar

Linear

Angular

Categorize the following molecular geometry according to their polarity.

Polar

Non-polar

Categorize

Options (12)

N₂

Br

Li

HF

H₂O

NH₃

CH₃COOH

CH₃OH

CH₃NH₂

I₂

O₂

F₂

Categorize the following molecules as polar or non-polar.

Polar

Non-polar

Multiple Choice

The following are noble gases, which are considered non-polar EXCEPT

• Hydrogen

• Neon

• Xenon

• Helium

• Argon

Multiple Choice

Molecules that contain Carbon and Hydrogen are more likely polar.

• True

• False

Multiple Choice

Which of the following is NOT a non-polar?

• CH₄

• C₂H₆

• CH₂=CH₂

• HF

Categorize

Options (15)

has dipole

partially positive and negative

CH₄

assymetrical geometry

symmetrical geometry

HF

O₂

Helium

central atom has lone pairs

central atom has no lone pairs

Cl

Electronegativity difference is >0.5

Electronegativity difference is <0.5

unequal sharing of electrons

equal sharing of electrons

Organize these options into the right categories. Electronegativity difference is <0.5

Polar

Non-polar