I am tuning some algorithms for electron counting. They work fine for s, p-, and d-block elements, but need some work for p-block compounds.

We are generally happy enough to say that the oxygen in OH2 is 8, the nitrogen in NH3 is 8, and so on. However for compounds of the type:

POCl3
[SO4]2-
[ClO4]-
[PO4]3-

we could regard all or none as 8-electron compounds. According to how one chooses to do it, perchlorate gives a total VE count of 8, or perhaps 14. If we accept PCl5 as 10 (do we?) then perhaps POCl3 is 10 as well.

Discuss

Hi! We have to do a powerpoint presentation for our sixth grade. The teacher wants us to find unusual facts about the element cesium ( or caesium). If anyone knows some we would be grateful. But we have to able to list the source in a bibliography. Thanks SO Much!! :lol:

Do any of you know uses for salt need it for a project :?: :D

I was wondering...does anyone know the chemical formula for saliva? If you do please tell me. Thanks

ok, i get how to do the lewis structure of just one atom of one type of element, like of C or of N, but i dont understand how to combine them, like in SiCl3Br Can someone explain it to me quick?!?!? PLEASE!!!!!!!

-Kristina

i want to further my research on the sulfide,tellurite and so on. but i am not familiar with which, and i have to look it in so much referrences, and some difficulty is encounted with me, for example, i can not get the meaning of such symbols P3/mmm(space group symbols), can you tell me some thing about it. thanks in advance!

Hello

I am Amel Top

Chtela bych jenom vedet, zda na tuhle stranku chodi i nejaci Cesi, zak se kdyztak ozvete ti, co tehle zprave rozumite (predpokladam, ze vetsina anglicky mluvicich clovicku asi ne... :D )
Jee, to je fajny smajlik!!! :shock: Ten se mi libi...No nic, ja se jdu ucit na pisemku, kdyby se prisel nas milovany prosefor chemie, tak aby vedel, ze aspon nekdo se na ty silene pisemky uci...Ne ze by sice vedel, jaka je moje prezdivka...ale co, stejne mi nikdo nerozumi... :roll: Uz mi z tech halogenu hrabe... :lol:

Welcome to this forum. Please keep the discussions civil! :D