Ionic and Covalent Bonding Concepts

Front

What is a formula unit?

Back

A formula unit is the simplest ratio of ions in an ionic compound, representing the lowest whole number ratio of the ions involved.

Front

What is a molecular formula?

Back

A molecular formula shows the actual number of atoms of each element in a molecule of a covalent compound.

Front

How does electronegativity change across the periodic table?

Back

Electronegativity increases as you move up and to the right of the periodic table.

Front

What happens to lower electronegative atoms in ionic bonding?

Back

Lower electronegative atoms form a cation and lose electrons.

Front

How many valence electrons does Helium (He) have?

Back

Helium has 2 valence electrons.

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 is formed when electrons are shared between atoms?

Back

A covalent bond is formed when electrons are shared between atoms.

Front

What type of bond is formed when electrons are transferred from one atom to another?

Back

An ionic bond is formed when electrons are transferred from one atom to another.

Front

What is a polyatomic ion?

Back

A polyatomic ion is a charged species composed of two or more atoms covalently bonded together.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.