7th - Covalent Formulas, Naming, and Electronegativity

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond formed when two atoms share one or more pairs of electrons.

Front

What is the molecular formula for methane?

Back

The molecular formula for methane is CH₄.

Front

What shape does a methane molecule (CH₄) have?

Back

Methane has a tetrahedral shape.

Front

What is electronegativity?

Back

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

Front

Which molecule is an example of a covalent compound?

Back

CO₂ (carbon dioxide) is an example of a covalent compound.

Front

What is the Lewis structure?

Back

The Lewis structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist.

Front

What is the shape of carbon dioxide (CO₂)?

Back

Carbon dioxide has a linear shape.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons.

Front

What is the significance of the octet rule in covalent bonding?

Back

The octet rule states that atoms tend to bond in such a way that they each have eight electrons in their valence shell, achieving a stable electron configuration.

Front

What is the molecular geometry of ammonia (NH₃)?

Back

Ammonia has a trigonal pyramidal molecular geometry.