Chemistry Forum

anyone can please tell me why an alloy of sodium and potassium (NaK) is liquid? thanks

Mr. Graham Kemp, thanks a lot for your reply. question: count the total number of electrons in the covalent bonds surrounding the sulphur atom in Sulphate Ion. How can one argue for its expected answer ie '6'. If i count the total number of electrons that surround the sulphur atom, then it is 12 as ...

please help me with: In the Lewis structure of Sulphuric Acid, what is the total number of electrons in the covalent bonds surrounding the sulphur atom? thanks.

please tell me why in chemical equation sulphur is denoted as S and not as S8?

Thanks for all moderators of this forum and members for their tremendous participation. I would like to know why some transition metals are used as catalysts in many chemical reactions and what are the possible reasons for their use as catalysts. Thanks

Generally, the atomic radii decrease across the period. But the atomic radii values of Bi (160pm) and Po (190 pm) indicate a deviation from the trend. The Po has a bigger atomic radius value than Bi, whereas it should have a smaller one? Thanks.

Please consider the following reaction:
4Zn (s) + 10HNO3 (aq) → 4Zn(NO3)2 (aq)+ NH4NO3(aq)+3H2O(l)
Mostly, Nitric Acid on reaction with metals, forms metallic nitrates, NO (Nitric Oxide) or NO2 (Nitrogen Dioxide); what I don't understand is that why Nitric Acid here forms NH4NO3. Thanks.