3.1: Bonding & Lewis Structures

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where pairs of electrons are shared between two nonmetal atoms.

Front

What type of bond is formed between metals and nonmetals?

Back

Ionic bond.

Front

How many unshared pairs of electrons does oxygen have in a water molecule (H2O)?

Back

2 unshared pairs.

Front

What is the correct chemical formula for ammonia?

Back

NH₃.

Front

How many valence electrons does Lithium have?

Back

1 valence electron.

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 the difference between polar and non-polar covalent bonds?

Back

Polar covalent bonds occur when electrons are shared unequally, while non-polar covalent bonds occur when electrons are shared equally.

Front

What is a Lewis structure?

Back

A Lewis structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist.

Front

What is the significance of valence electrons in bonding?

Back

Valence electrons are the electrons in the outermost shell of an atom and are involved in forming bonds with other atoms.

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.