Formulas for Binary Compounds

Front

What is the charge of a calcium ion (Ca)?

Back

+2

Front

What is the formula for the ionic compound formed between potassium (K) and nitrogen (N)?

Back

K3N

Front

What is the formula for the ionic compound formed between calcium (Ca) and bromine (Br)?

Back

CaBr2

Front

What is the chemical formula for the ionic compound formed between potassium (K) and oxygen (O)?

Back

K2O

Front

How many electrons does a phosphorus atom need to gain to achieve a full octet?

Back

3

Front

What is the general rule for determining the charge of a monatomic ion?

Back

The charge is equal to the number of electrons lost or gained to achieve a full outer shell.

Front

What is the octet rule in chemistry?

Back

Atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.

Front

What is the significance of the subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a compound.

Front

What is the formula for the ionic compound formed between magnesium (Mg) and chlorine (Cl)?

Back

MgCl2

Front

What is the charge of a potassium ion (K)?

Back

+1