Answer:Sodium chloride has higher boiling point than Potassium chloride.
Explanation:This is due because potassium is larger than sodium,which means that sodium chloride has higher lattice energy in comparison to potassium chloride.
The answer is C because The products are way more stable than the reactants.
The answer is LiCl. All the other answers have vapor pressure at room temperature. Hope this helps. :)
The answer is a. the atomic number represents the total protons and since the atom is neutral the number of protons and electrons are the same. therefore your answer is a.