The physical state and also properties the a specific compound count in big part ~ above the form of ubraintv-jp.comistry bonding it displays. Molecular compounds, sometimes called covalent compounds, display a wide selection of physics properties because of the different species of intermolecular attractions together as different kinds that polar interactions. The melting and boiling points of molecular compounds are generally quite low compared to those the ionic compounds. This is because the power required come disrupt the intermolecular forces in between molecules is far less 보다 the power required to break the ionic bonds in a crystalline ionic link (Figure (PageIndex1)) . Ionic solids commonly melt at high temperatures and boil in ~ even higher temperatures. Because that example, sodium chloride melts in ~ 801 °C and boils at 1413 °C. (As a comparison, the molecular compound water melts in ~ 0 °C and also boils at 100 °C.). The water solubility of molecular compounds is variable and depends generally on the kind of intermolecular forces involved.

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Figure (PageIndex1) interactions in Ionic and also Covalent Solids.

(a) The positively and also negatively charged ions in one ionic hard such as

sodium chloride (NaCl) are organized together by solid electrostatic interactions.

(b) In this depiction of the packing of methane (CH4) molecules in heavy methane,

a prototypical molecule solid, the methane molecule are organized together

in the solid only by fairly weak intermolecular forces, also though

the atoms within each methane molecule are organized together by strong covalent bonds.

Since molecular compounds room composed of neutral molecules, their electrical conductivity is typically quite poor, even if it is in the heavy or fluid state. In heavy form, one ionic link is not electrically conductive because its ions space unable to circulation (“electricity” is the circulation of fee particles). When molten, however, it can conduct electricity due to the fact that its ions room able come move easily through the liquid (Figure (PageIndex2); video clip (PageIndex1)).

See more: How Much Does An Oxygen Tank Weigh ? Overview Of Oxygen Tanks Or Cylinders

This number shows three photos connected by right-facing arrows. The an initial shows a light pear as part of a complicated lab tools setup. The light pear is not lit. The 2nd photo mirrors a substances gift heated or set on fire. The third shows the light pear again i m sorry is lit.what is the difference between an ionic compound and a molecular compound?