Chemical Bonding: Introduction to Bonding

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons.

Front

Which compound is an example of covalent bonding?

Back

CH4 (methane) is formed by covalent bonding.

Front

What is an ionic bond?

Back

An ionic bond is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions.

Front

Which compound is an example of ionic bonding?

Back

Na2O (sodium oxide) is formed by ionic bonding.

Front

What does electronegativity (EN) measure?

Back

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

Front

Which molecule has the most polar bond?

Back

HF (hydrogen fluoride) has the most polar bond due to the highest difference in electronegativity.

Front

What happens to lithium and oxygen when they bond?

Back

Lithium forms a positive ion (Li+) and oxygen forms a negative ion (O2-).

Front

What is the difference between polar and nonpolar covalent bonds?

Back

Polar covalent bonds have unequal sharing of electrons, while nonpolar covalent bonds have equal sharing.

Front

How do you calculate the difference in electronegativity (ΔEN)?

Back

ΔEN is calculated by subtracting the electronegativity values of the two atoms involved in the bond.

Front

What is the significance of a high ΔEN value?

Back

A high ΔEN value indicates a strong polar bond, leading to ionic character in the bond.