- Suppose that a newly discovered element called centium has three isotopes that occur in
hese are centium-200, centium-203. and centium-209. Assume that these isotopes
occur in equal amounts in nature. What will be the average atomic mass of this element?

Vi limitens. vastery test select the correct answer. which statement explains why large atoms are more reactive than small atoms? a. large atoms have valence electrons farther from the nucleus and lose them more readily. b. large atoms have greater ionization energy, which they can utilize during a reaction. c. large atoms have a greater number of electrons that they can lose during a reaction. d. large atoms have more energy levels, so they have more energy to pass on in a reaction. reset next