Lonic bonds tend to form between a. nonmetals; nonmetals
b. metals; nonmetals
c. metals; metals
d. all of these

Easy definition for atom and atomic mass

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules