A covalent bond is when two elements equally share valence electrons. chemistry. The evidence for the existence of these weak intermolecular forces is the fact that gases can be liquefied, that ordinary liquids exist and need a considerable input of energy for vaporization to a gas of independent molecules, and that many molecular compounds occur as solids. It is a magnesium salt and a metal sulfate. Nature of Forces. Intermolecular Forces • List the substances BaCl 2, H 2, CO, HF, and Ne in order of increasing boiling points. Intermolecular forces are attractive forces. Intramolecular forces determine chemical behavior of a substance. Magnesium reacts with iron(II) chloride according to the equation Mg(s) + FeCl2(aq) → MgCl2(aq) + Fe(s) a. Intermolecular forces are involved in two different molecules. Intermolecular forces. The aim of this ScienceStruck post is to put forth the concept of how different intermolecular forces work along with some examples for a better understanding of the concept. The intermolecular forces presented in magnesium sulfate are ionic, dipole-dipole, and London dispersion. Magnesium is reduced. 4. • The attractive forces are stronger for ionic substances than for molecular ones • The intermolecular forces of the remaining substances depend on … Under appropriate conditions, the attractions between all gas molecules will cause them to form liquids or solids. Forces between Molecules. Intramolecular and Intermolecular Forces (after, Silberberg, Chemistry, Table 12-2, McGraw Hill) Type of Force Interaction Energy Range (kJ/mol) per interaction Examples ion-ion cation-anion 400-4000 strong Na+Cl-(s), Ba2+O2-(s) covalent shared electron pairs 150-1100 strong The weak intermolecular bonds in liquids and solids are therefore often called van der Waals forces. Intermolecular forces within magnesium sulfate are both ionic and covalent. It has a role as an anticonvulsant, a cardiovascular drug, a calcium channel blocker, an anaesthetic, a tocolytic agent, an anti-arrhythmia drug, an analgesic and a fertilizer. A. dipole-dipole forces B. hydrogen bonding C. London Dispersion forces D. no intermolecular . Is iron(II) ion oxidized or is it reduced? Magnesium sulfate is a magnesium salt having sulfate as the counterion. Is magnesium oxidized or is it reduced? b. The properties of liquids are intermediate between those of gases and solids, but are more similar to solids. An ionic bond is when one element donates its electrons to the other more electronegative element. Molecules cohere even though their ability to form chemical bonds has been satisfied. In contrast to intramolecular forces, such as the covalent bonds that hold atoms together in molecules and polyatomic ions, intermolecular forces hold molecules together in a liquid or solid.Intermolecular forces are generally much weaker than covalent bonds. Intermolecular forces determine the state of matter (solid/liquid/gas) and their physical properties such as melting/ boiling point etc. Intermolecular forces are required to make molecules stick together, and they are the reason why compounds with differing chemical properties have different physical properties. These forces can be divided into three categories: (1) dipole-dipole, (2) dipole-induced dipole, and (3) induced dipole-induced dipole. Intramolecular forces are involved in two segments of a single molecule. Dispersion forces • Universal forces between molecules or atoms • Electrostatic interactions between a temporary induced dipole moment of one molecule and a temporary induced dipole moment of another molecule • The bigger the polarizability, the stronger dispersion forces • The larger intermolecular contact, the bigger dispersion forces