Basic chemistry....Bonds

[Valerividangel]

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Hey guys, please do not judge me for the extremely basic questions....

· Is it safe to say that Polar Covalent Bonds are like Ionic bonds? What is the difference?
It seems H2O is a good example for both, this is where I get confused.....


· What is the difference between a Polar Covalent Bond and a Hydrogen bond?

 

[Lnguyen7]

Covalent bonds are bond between two nonmetals. You can have polar, nonpolar and coordinate covalent bond. A bond is polar when there is an uneven distribution of electron density between the two nonmetals (ex: C=O) and nonpolar when it is even (C-C). A C-H bond is considered nonpolar because the difference in electronegativities is too small. In both cases, each of the atoms shares one electron. A coordinate covalent bond, on the other hand, is a covalent bond in which one of the atoms donates both electrons (ex: F3B-NH3).
Hydrogen bond is a type of covalent bonds where a H atom bond to one of these atoms F, O, N. H2O, NH3 are examples.

Ionic bonds are bond between a metal and a nonmetal. Examples are NaCl, Al2O3...

 

[Lnguyen7]

I am not sure why I posted twice

 

[ekam]

Ionic Bonds are between Metal and Non Metals example: NaCl where Na is metal and Cl is non metal
Covalent Bonds are between two non metals like CH4 and H2O. Polar molecules have difference in electronegativity.
H2O is polar covalent because both H and O are non-metals and there is a difference in electronegativities of hydrogen and oxygen. Oxygen is more electronegative and has overall partial negative charge and hydrogen has partial positive charge.

Hydrogen Bonding- Compounds that have F-H, O-H, N-H bonds have hydrogen bonding. H2O has O-H bonds.
In water, any compound that has partially charged F, N and O bond forms hydrogen bonding

Well, that's just the basic, there are a lot to it.
I will suggest watch Chad's videos- Intermolecular Forces. It will help