Polarity and electronegativity

Front

What is a double bond?

Back

A double bond is a type of chemical bond where two pairs of electrons are shared between two atoms, totaling four electrons.

Front

In a nonpolar covalent bond, how are electrons shared?

Back

In a nonpolar covalent bond, electrons are shared equally between the two atoms.

Front

Which atom is the most electronegative in the periodic table?

Back

Fluorine is the most electronegative atom in the periodic table.

Front

How are electrons shared in a polar covalent bond?

Back

In a polar covalent bond, electrons are shared unevenly between the two atoms.

Front

In a polar covalent bond, where do the electrons gather?

Back

In a polar covalent bond, the electrons gather around the atom with the greatest electronegativity.

Front

What is electronegativity?

Back

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

Front

What type of bond forms between atoms with similar electronegativities?

Back

A nonpolar covalent bond forms between atoms with similar electronegativities.

Front

What happens to the electron density in a polar covalent bond?

Back

The electron density is higher around the more electronegative atom, creating a dipole.

Front

What is the difference between polar and nonpolar molecules?

Back

Polar molecules have a net dipole due to uneven distribution of electrons, while nonpolar molecules do not.

Front

How does the difference in electronegativity affect bond type?

Back

A large difference in electronegativity (typically >1.7) leads to ionic bonds, while a small difference leads to covalent bonds.