Chemical Bonding

Front

What forms covalent bonds in chemical compounds?

Back

Covalent bonds form when pairs of electrons are shared between two nonmetal atoms.

Front

How many unshared pairs of electrons are in the Lewis structure of NH3?

Back

There is 1 unshared pair of electrons in the Lewis structure of NH3.

Front

Which types of elements generally form a covalent bond?

Back

Covalent bonds are generally formed between 2 or more nonmetals.

Front

What is a polar covalent bond?

Back

In a polar covalent bond, electrons are shared unequally between two atoms.

Front

What is the definition of a covalent bond?

Back

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

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

What is electronegativity?

Back

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

Front

What is the significance of the electronegativity difference in bond formation?

Back

A large electronegativity difference typically leads to ionic bonds, while a small difference leads to covalent bonds.

Front

What is a Lewis structure?

Back

A Lewis structure is a diagram that shows the bonding between atoms and the lone pairs of electrons in a molecule.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to form bonds in such a way that they have eight electrons in their valence shell.