Forming Ionic & Covalent Bonds w/ Electron Dot Diagrams

[mobb]

help on this?
Use electron dot diagrams to form ionic and covalent bons
BeF2 [ type of bond ] [ electron dot diagram]
H2O
Br2
NF3
Na2S
CaCl2

 

[Astronuc]

This post belongs in the homework section - https://www.physicsforums.com/forumdisplay.php?f=157

And we expect the student to show work before asking for assistance.

Hints:

Alkali and alkali Earth metal usually form ionic bonds with halides.

Two of the element would form a covalent bond.

 

[mobb]

i've been eating my brain for 2 and a half hours now and i still don't understand it :S

 

[Astronuc]

What don't you understand? Perhaps these will help.

http://en.wikipedia.org/wiki/Ionic_bond

http://en.wikipedia.org/wiki/Covalent_bond

http://en.wikipedia.org/wiki/Polar_covalent_bond


http://en.wikipedia.org/wiki/Lewis_Structure

http://www.chemtutor.com/compoun.htm#lewis

http://www.ausetute.com.au/lewisstr.html

http://www.science.uwaterloo.ca/~cchieh/cact/c120/dotstruc.html