Which of these elements reacts rapidly when dropped in water: rubidium (rb), magnesium (mg), cobalt (co), argon (ar), or cadmium (cd)?

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.