FLASHCARD: WS 4-5 Molecular Geometry and Polarity 2024

Front

What is a diatomic molecule?

Back

A diatomic molecule is a molecule composed of only two atoms, which can be of the same or different chemical elements.

Front

What does it mean for a molecule to be nonpolar?

Back

A nonpolar molecule has an even distribution of electrical charge, meaning that the electrons are shared equally between the atoms.

Front

What is electronegativity?

Back

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

Front

How do lone pairs of electrons affect molecular geometry?

Back

Lone pairs of electrons can alter the shape of a molecule by repelling bonding pairs, leading to different geometries such as bent or pyramidal.

Front

What is the shape of a molecule with four bonding pairs and no lone pairs?

Back

The shape is tetrahedral.

Front

What is the difference between polar and nonpolar covalent bonds?

Back

Polar covalent bonds involve unequal sharing of electrons, while nonpolar covalent bonds involve equal sharing.

Front

How do you determine if a bond is polar?

Back

A bond is polar if there is a significant difference in electronegativity between the two atoms involved.

Front

What is the most polar bond among H-F, H-Cl, H-Br, and H-I?

Back

The most polar bond is H-F.

Front

What is the molecular geometry of a molecule with two bonding pairs and one lone pair?

Back

The molecular geometry is bent.

Front

What is the significance of lone pairs in determining molecular polarity?

Back

Lone pairs can create an uneven distribution of charge, making the molecule polar.