i don't know but don't you have a textbook or something
Higher than what? Some organic compounds (e.g. propane, butane) have very very low boiling points making them gases at room temperature. Certain inorganic compounds (e.g. tungsten carbide) have boiling points so high that before those compounds boiled all organic compounds would not only have boiled but would have decomposed into their elements or very simple inorganic carbon compounds (e.g. carbon monoxide, carbon dioxide).
An intermolecular force has both a boiling point and melting point
Not really, most have low boiling points, except for carbon, for example, which has one of the highest boiling points of any substance at 4827 ºC and Silicon boils at 2355 ºC. Iodine boils at a higher temperature than mercury.
lower melting points
The normal boiling point is the boiling point at sea level, or more precisely, at 1 atmosphere pressure. At higher elevations, or at lower atmospheric pressures, the boiling point is lower. At higher atmospheric pressures, the boiling point is higher.
Air is a mixture; it doesn't have a melting or boiling point. It has a mixture of carbon dioxide, ozone, oxygen, nitrogen, helium, etc. look up those gases separately and you will get answers.
The stronger the intermolecular forces, the higher the melting point and boiling point. The weaker the intermolecular forces, the lower the melting and boiling points are.
Ionic compounds have higher boiling points than covalent compounds.
The lower the carbon chain, the lower the melting point. As the carbon chain gets longer (ie: larger hydrocarbons), the melting point gets higher.
Straight chain isomers have higher boiling points, so the more branched the isomer the lower the boiling point.
Non-metals have lower boiling points than metals. A link can be found below.
the boiling points decrease on hydrocarbons as the length of the chain and the weight increases. the melting points increase with length and weight increase. Hope this helps.