Timeline for Is melting/boiling point of ionically bonded substance higher than of covalently bound?
Current License: CC BY-SA 3.0
13 events
| when toggle format | what | by | license | comment | |
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| Dec 6, 2017 at 0:59 | history | edited | Mithoron | CC BY-SA 3.0 |
deleted 23 characters in body; edited tags; edited title
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| Jun 13, 2017 at 11:06 | history | protected | orthocresol | ||
| Nov 29, 2015 at 0:53 | answer | added | Dr C | timeline score: 2 | |
| Nov 11, 2015 at 17:45 | comment | added | Dale | The ionic bond is usually stronger than the Van der Waals forces between the molecules which are covalent solids. Covalent Bonds are not broken during melting. Ionic Bonds are broken. | |
| Mar 28, 2015 at 15:50 | answer | added | matt_black | timeline score: 11 | |
| Dec 14, 2013 at 9:18 | comment | added | user2617804 | He should have said discrete covalently bonded whereby the actual bonding that defines the phase is physical or Van Der Waals. All network covalent molecules (especially 3D) have high melting points. | |
| Dec 6, 2013 at 16:44 | history | tweeted | twitter.com/#!/StackChemistry/status/409000318916382720 | ||
| Dec 6, 2013 at 14:54 | comment | added | user26143 | The melting point of diamond (under pressure) is not lower than typical ionic compound. I guess one need to phrase the word "usually" in certain sense.... | |
| Dec 6, 2013 at 13:06 | comment | added | Sensebe | In case of ionic compounds, there is a complete transfer of electrons from one atom of the element to another atom of the another element. So, there exists a strong electrostatic force. In case of covalent compounds, electrons are not completely dragged, the atoms of different elements are attracted by a weaker electrostatic force. Thus, ionic compounds have atoms bound by stronger electrostatic force than in case of covalent compounds. So, in general it is easy to break covalent bond than ionic. Thus, melting and boiling points of ionic compounds is greater than covalent compounds. | |
| Jul 22, 2013 at 12:49 | comment | added | Ben Norris | @TanithRosenbaum - your comment is a good starting point for an answer that distinguishes between interatomic (intramolecular) forces and intermolecular forces, which govern the macroscopic properties. | |
| Jun 21, 2013 at 17:25 | answer | added | Eric Brown | timeline score: 3 | |
| Jun 21, 2013 at 14:31 | comment | added | Tanith Rosenbaum | Neither ionic nor covalent bonds have a "melting point". The melting point is a macroscopic property of a compund or element, while bonds are phenomena on the mircoscopic (atomic scale) level. Did you mean melting points of compounds incorporating ionic bonds as opposed to compounds incorporating solely covalent bonds? | |
| Jun 21, 2013 at 10:14 | history | asked | Organ | CC BY-SA 3.0 |