The acid and base that will combine with to form salt without forming water is hydrochloric acid (HCl) and ammonia (NH3)
Explanation
Hydrochloric acid (HCl) an acid react with ammonia (NH3) a base to form a salt that is ammonium chloride NH4Cl without forming water(H20)
equation for reaction
Nh3 + HCl → NH4Cl (salt)
Because it is less stable than phosphorous
Na - 2 atoms
S - 2 atoms
O - 3 atoms
2 + 2 + 3 = 7, correct answer is D
Intermolecular forces are the forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions ). These forces are weak compared to the intramolecular forces, such as the covalent or ionic bonds between atoms in a molecule.