Elements in the same vertical column share similar chemical properties. which statement best explains this? a. they have the same number of neutrons in their nucleus. b. they have similar physical qualities. c. they have identical numbers of electrons in the outermost level. d. they were discovered in the same location.

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.