Naming Compounds and Writing Formulas

Front

What is the correct name for the N3− ion?

Back

nitride ion.

Front

Which element when combined with chlorine would most likely form an ionic compound?

Back

lithium.

Front

What is a cation?

Back

A cation is any atom or group of atoms with a positive charge.

Front

What do metals in Groups 1A, 2A, and 3A do when they form ions?

Back

They lose electrons when they form ions.

Front

What does a molecular formula show?

Back

It shows the number and kinds of atoms in a molecule of a compound.

Front

What is an ionic compound?

Back

An ionic compound is formed when a metal reacts with a non-metal, resulting in the transfer of electrons.

Front

What is the charge of a sodium ion (Na+)?

Back

The charge of a sodium ion is +1.

Front

What is the difference between a molecular formula and an empirical formula?

Back

A molecular formula shows the actual number of atoms of each element in a molecule, while an empirical formula shows the simplest whole-number ratio of the elements.

Front

What is the formula for calculating the charge of a metal ion from its group number?

Back

The charge is found by subtracting 8 from the group number.

Front

What is the name of the ion with the formula Cl−?

Back

The ion with the formula Cl− is called the chloride ion.