Lewis electron dot structures and ionic compounds (1 Viewer)

[planino]

How would you represent

4Na + O₂ -----> 2Na₂O and

4Al + 3O₂ -----> 2Al₂O₃

with Lewis electron dot structures? These ionic compounds are driving me nuts

 

[planino]

bump

 

[barbernator]

ok i will do them on paint now


actually, its probably best to split the Al up on the RHS, and draw both of them. People teach electron structures many different ways

 

[planino]

ok i will do them on paint now


actually, its probably best to split the Al up on the RHS, and draw both of them. People teach electron structures many different ways

for sodium oxide, don't the sodium ions go on either side of the single oxygen ion?

 

[barbernator]

for sodium oxide, don't the sodium ions go on either side of the single oxygen ion?

yeh they do, i meant split the aluminium up that was on the right side of the equation. and yes put one either side.

 

[planino]

yeh they do, i meant split the aluminium up that was on the right side of the equation. and yes put one either side.

Ah that clears it up, thanks

 

[planino]

wait, is aluminium oxide meant to look like this? (looks really retarded btw)

 

[nightweaver066]

wait, is aluminium oxide meant to look like this? (looks really retarded btw)

View attachment 24952

Seems right.

I don't think i've ever drawn anything as complicated as that back in year 11.

All i remember drawing are NaCl, HCl, water and simple diatomic molecules haha.

 

[planino]

lol yeah even I doubt that something like that may appear in our half yearly, but in one of the past papers, the sodium oxide equation was there and now I really don't know what to expect :L

 

[planino]

To represent the equation you do

- 2Na. --> 2Na+ + 2electrons
- .O. + 2electrons --> O2-
By combining these two you get : 2 [Na-] + [ O2-] --> Na2O

Note the . represents an electron and + and 2- is the charge of the ion.

To show the ionic compound as a lewis structure you can use the drawing you posted

.....I knew that....

 

[superSAIyan2]

.....I knew that....

I you did ngo that why did u post it a few deys ago

 

[planino]

I you did ngo that why did u post it a few deys ago

 

[planino]

It's because I had doubts about more complex dot diagrams and I didn't ngo how to do them