4)  an atom of an element with two valence electrons reacts with two atoms of an element with atomic number 17 to form an ionic compound. what is the compound most likely formed as described?

The density of a planet is 0.69 g/cm3 (density of water is 1.0 g/cm3). which of the following planets might this be? a. mercury b. venus c. saturn d. mars

Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.

What are the 4 phases of matter in order of increasing engery content?