Electronegativity and Bond Polarity

Front

What is electronegativity?

Back

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

Front

How does electronegativity affect bond polarity?

Back

The difference in electronegativity between two atoms determines the polarity of the bond; a larger difference leads to a more polar bond.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of chemical bond where a pair of electrons is unequally shared between two atoms.

Front

What is a nonpolar covalent bond?

Back

A nonpolar covalent bond is a type of chemical bond where two atoms share a pair of electrons equally.

Front

What is the trend of electronegativity in the periodic table?

Back

Electronegativity increases across a period from left to right and decreases down a group.

Front

Which element has the highest electronegativity?

Back

Fluorine (F) has the highest electronegativity of all elements.

Front

How do you determine the polarity of a molecule?

Back

To determine polarity, assess the electronegativity differences and the molecular geometry.

Front

What is the electronegativity difference that typically indicates a polar covalent bond?

Back

An electronegativity difference of 0.4 to 1.7 typically indicates a polar covalent bond.

Front

What is the electronegativity difference that typically indicates an ionic bond?

Back

An electronegativity difference greater than 1.7 typically indicates an ionic bond.

Front

What is the electronegativity difference that typically indicates a nonpolar covalent bond?

Back

An electronegativity difference of less than 0.4 typically indicates a nonpolar covalent bond.