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

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 electronegativity difference indicates a polar covalent bond?

Back

An electronegativity difference from 0.5 to 1.8 indicates a polar covalent bond.

Front

What electronegativity difference indicates an ionic bond?

Back

An electronegativity difference greater than 1.8 typically indicates an ionic bond.

Front

How are electrons shared in a polar covalent bond?

Back

Electrons in a polar covalent bond are shared quite unevenly.

Front

How are electrons shared in a nonpolar covalent bond?

Back

Electrons in a nonpolar covalent bond are shared pretty much evenly.

Front

What type of bond is formed between cesium (Cs) and bromine (Br)?

Back

The bond between Cs and Br is best classified as ionic.

Front

What type of bond is formed between carbon (C) and oxygen (O)?

Back

The bond between C and O is best classified as polar covalent.

Front

What is the significance of electronegativity in determining bond type?

Back

Electronegativity helps predict whether a bond will be ionic, polar covalent, or nonpolar covalent based on the difference in electronegativity between the two atoms.