Kincade AP Chemistry Unit 2 Review

Front

What does the Lewis structure of N2H2 indicate about nitrogen's lone pairs?

Back

Each nitrogen has one lone pair.

Front

How does the number of covalent bonds affect the distance and strength of the bond between two atoms?

Back

As the number of covalent bonds increases, the distance between the atoms decreases and the strength of the bond increases.

Front

Arrange the following elements in order of increasing electronegativities: francium, gallium, germanium, phosphorus, zinc.

Back

Francium, zinc, gallium, germanium, phosphorus.

Front

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

Back

B

Front

Arrange the following elements in order of increasing electronegativity: antimony, fluorine, indium, selenium.

Back

Indium, antimony, selenium, fluorine.

Front

Define electronegativity.

Back

Electronegativity is the tendency of an atom to attract electrons in a chemical bond.

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Front

Explain the significance of lone pairs in molecular geometry.

Back

Lone pairs can affect the shape of a molecule by repelling bonding pairs, leading to different molecular geometries.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to form bonds until they are surrounded by eight valence electrons.

Front

How do you determine the formal charge of an atom in a molecule?

Back

Formal charge = (Valence electrons) - (Non-bonding electrons) - 0.5*(Bonding electrons).