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

Which element has the highest electronegativity?

Back

Fluorine has the highest electronegativity of all elements.

Front

What is the trend of electronegativity across a period in the periodic table?

Back

Electronegativity increases across a period from left to right.

Front

What is the trend of electronegativity down a group in the periodic table?

Back

Electronegativity decreases down a group.

Front

What type of bond is formed when the difference in electronegativity is less than 0.4?

Back

A nonpolar covalent bond is formed.

Front

What type of bond is formed when the difference in electronegativity is between 0.4 and 1.7?

Back

A polar covalent bond is formed.

Front

What type of bond is formed when the difference in electronegativity is greater than 1.7?

Back

An ionic bond is formed.

Front

Is H2O a polar or nonpolar molecule?

Back

H2O is a polar molecule.

Front

What is bond polarity?

Back

Bond polarity refers to the distribution of electrical charge over the atoms joined by the bond.

Front

How does the shape of a molecule affect its polarity?

Back

The shape of a molecule can determine whether the polar bonds cancel each other out, affecting overall polarity.