Students helping students, join us in improving Bored of Studies by donating and supporting future students!
Polar bonds only occur in covalent networks....A polar bond is a bond between two elements with a vast difference in electronegativity. Electronegativity is defined as the ability of elements to attract electrons (i.e non-metals are more electronegative than metals). A polar molecule is a molecule which contains polar bonds, and is asymmetrical so that the polarity does not cancel out.
So the molecule HF is polar as the H-F bond is polar (as flourine is the most electronegative element, with a vastly greater electronegativity compared to H) and is asymetrical. In this molecule, the distribution of electrons is uneven as Flourine 'hogs' the electrons due to the higher electronegativity. So the electrons orbit closer to the nucleus of F, making it slightly negative, and thus making H slightly positive.
![]()
of itself and fluorine when the position of hydrogen itself on the periodic table itself is undefined? - http://chemistry.stackexchange.com/questions/4164/hydrogen-its-place-in-the-periodic-tableelectronegativity
Do polar atoms appear in all covalently bonded molecules which have a vast difference in electronegativity, or is it just a prerequisite?Note that polar is different to 'charged', where the electron permanently orbits the other atom in an ionic bond.
Polar atoms appear in covalently bonded molecules.
False, polar bonds do not only occur in covalent networks. They are found in covalent compounds in general (e.g. the O-H bonds in water are polar)Polar bonds only occur in covalent networks....
However, just a few questions.. what do you mean by asymmetrical? I know that it's about the electron dot diagram, but how would you know whether a bond between two elements is asymmetrical? For example, how would you know if the dot diagram of water is asymmetrical?
Secondly, how could you judge and say that hydrogen has a vast difference between the of itself and fluorine when the position of hydrogen itself on the periodic table itself is undefined? - http://chemistry.stackexchange.com/questions/4164/hydrogen-its-place-in-the-periodic-table
Thanks anyhow![]()
YesIs this preliminary chemistry?
Keep in mind some people are either accelerated, or self learn.I swear you guys are going so ahead in the chemistry syllabus... I'm learning about valencies and how to balance chemical equations.. :/ Wut.
Sent from my GT-I9506 using Tapatalk