From the list below, determine which properties are for compounds. i. it takes a large amount of energy to separates the elements of a compound. ii. the proportions of the elements in a compound are always fixed. iii. it is easy to separate the elements of a compound. iv. the elements/components of a compound do not retain their individual properties. a) i & ii b) ii & iii c) i, ii & iv d) ii, iii, & iv

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.