Recent content by osaka

Thanks a lot.

Thanks,I understood it. And what about polarity of XeF2.

Does CH3OCH3 has any H bond between it's molecule? (It should has H bond but in my book it has no one ):confused: And does XeF2 has polarity? (Actaully,my book it has no one.again) That's why I'm not sure.

thank you.

Let me explain In complex ions you need to know EN in periodic table. high EN ion will absorb negative charge from lower EN ion. ie. SO4(2-) O have higher EN than S. O will be negative. SO4 have (2-) charge. O4=(8-) charge (-8)-(-2)=-6 now S will have +6

I have a problem with MgO(s). Mg(s) → Mg(g) Heat of sublimation = +148 kj ½O2(g) → O(g) Bond dissociation = +249 kj Mg(g) → Mg2+(g)+ 2e- IE1+IE2= +2201 kj O(g)+2e- → O2- EA= +737 kj look at the EA in peiodic table O(EA= -141 kj). When O charged 2e- it seems to be like F(EA=-328...

Thank you for your help. :smile:

oxidation number of transition elements. I know the oxidation number of non-metallic elements. But :confused: How do I know the oxidation number of transition elements. Such as Fe and Cr Cr = 4s1 3d5 when Cr change to Cr2+ Cr3+ Is it stable?