HChem 512 Unit 5 Review: Covalent Bonding

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons in order to have eight valence electrons, achieving a stable electron configuration similar to that of noble gases.

Front

Which atom does not obey the octet rule?

Back

Hydrogen (H) does not obey the octet rule as it can only hold a maximum of 2 electrons in its outer shell.

Front

What is a polar molecule?

Back

A polar molecule is one that has a net dipole moment due to the presence of polar bonds, resulting in a molecule with a positive end and a negative end.

Front

What is a non-polar molecule?

Back

A non-polar molecule is one that does not have a net dipole moment, meaning the distribution of electrical charge is even, and there are no distinct positive or negative ends.

Front

What is electronegativity?

Back

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

Front

What is the range of electronegativity difference for a polar covalent bond?

Back

The difference in electronegativity for a polar covalent bond is typically between 0.5 and 1.7.

Front

How many valence electrons are in OCl2?

Back

OCl2 has a total of 20 valence electrons (6 from oxygen and 7 from each of the two chlorine atoms).

Front

What type of bond is formed in N2O4?

Back

N2O4 is a covalent compound, formed by the sharing of electrons between nitrogen and oxygen atoms.

Front

What is the name of the compound N2O4?

Back

The name of the compound N2O4 is Dinitrogen tetroxide.

Front

What is a covalent bond?

Back

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