What is the charge on an atom after it gains two electrons during the formation of a bond? One negative charge
One positive charge
Two negative charges
Two positive charges

What is the formula for calcium iodide

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.