Structure and polarity

Front

What is electronegativity?

Back

Electronegativity is a measurement of the ability of an atom's nucleus to attract bonding electrons.

Front

In a polar covalent bond, how are electrons shared?

Back

Electrons are shared unequally.

Front

What determines if a molecule is polar or non-polar?

Back

The distribution of electron density and the shape of the molecule determine if it is polar or non-polar.

Front

What is the molecular shape of a molecule with 3 bonded atoms and 1 lone pair?

Back

The molecular shape is trigonal pyramidal.

Front

What type of bond forms between calcium and bromine?

Back

An ionic bond forms between calcium and bromine.

Front

What is a polar molecule?

Back

A polar molecule has a net dipole moment due to the presence of polar bonds and an asymmetrical shape.

Front

What is a non-polar molecule?

Back

A non-polar molecule has no net dipole moment, often due to symmetrical shape and equal sharing of electrons.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the significance of lone pairs in molecular geometry?

Back

Lone pairs affect the shape of the molecule and can create angles that differ from those predicted by the number of bonded atoms.

Front

How does electronegativity affect bond type?

Back

The difference in electronegativity between two atoms determines whether the bond is non-polar covalent, polar covalent, or ionic.