The list shows the order of reactivity of some elements K , Na, Ca, Mg, Zn, Fe, Which statement about the reactivity of these metals is correct ?

What is the formula for calcium iodide

Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?