Write the chemical formula for the ionic compound formed by lithium and fluorine.

1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )

Which substances have the lowest melting points: ionic covalent, or metallic

What is the maximum number of electrons that an atomic orbital can contain?