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rktpro

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Posts posted by rktpro

  1. Studiot-Sir, can you predict if the difference in intensity between two sides, or say the difference in amplidue (mean); in air and in water, would have any relation with the bulk modulous of media.

  2. Vasileturcu, any introductory text on modern physics will enlighten you. Else, try to study the simple experimental results of photoelectric effect. By the wave picture, how ever small the frequency, a high intensity must result in electron emission. A threshold frequency is then not required. I feel, that rather than fooling yourself, why don't you pick up a book and just try to predict all the plots and formulas without reading text. Then, when you read the text and understand where you went wrong, it won't take anyone else to tell you.

  3. I suspect (but can't cite evidence for it) that the work function or the melting point might be a better indicator of how well the metals resist gallium.

     

    I'm also rather inclined to doubt that the Xtal structure makes that much difference (except indirectly) because i think the attack takes place at Xtal boundaries.

    You mean it is adsorption and not absorption or say sorption? If it is physisorption, which is pointed out, then it shouldn't be much of a trouble.
  4. Charge of a polyatomic ion is defined. You must understand the difference between charge and oxidation number(not oxidation state, to be precise).Read definition, the charge an atom would aquire if all the covalent bonds of it in a bonded state are cleaved heterolytically, taking account of electronegativities.

  5.  

    Over-confidance, Sir. Certainly. I have a habbit of establishing the logic behind inorganic reactions. Reaction mechanisms are not quite common in books and sources and when I see a reaction I try to establish its identity. I do it with redox, quite easy, with reaction between oxides etc. Ignorance of the fact that Enthalpy points out, I might have failed considering that.

    But, both copper and platinum have ccp lattice. If Enthalpy is right, then gallium diffuses equally well in both.Isn't it?

  6.  

    Me, neither. But here goes:

     

    If I give you something that you willingly eat/drink/smoke and it kills you quickly, we call it a poison and I'm guilty of murder. If I give you something that you willingly eat/drink/smoke and it takes decades for you to die, we call that choice and I'm pretty much free to sell you such products as I please. Where do we draw the line, and why?

    In both cases it would be against you. You are not telling the adverse effects of your product while the buyer/taker is innocent.

    I would propose one: What makes a child so determined to learn to walk when he fails many times trying so, how is he inspired?

  7. pardon?

     

    (Though, for the record, biphenyl is clearly aromatic with 12 electrons; but they are in 2 rings.

    Sorry, I use a mobile device. I meant to say cyclohex-1-ene or simply cyclohexene. I think my point is clear? English is not my first language.

    The 12 electron make two separate aromatic rings.

    By saying that 8 pi electrons, that they make ring current; you challenge the very existence of the compound. You make it anti-aromatic not non-aromatic.

  8. I googled 'gallium reacts with platinum' and got no info about the reaction. That is why I asked you whether you predicted the reaction yourself. I admit that in my knowledge Platinum is nobel and I don't know of any reaction between it and metal like aluminium. Please post the reaction in your next post.

  9. John, the 8 electrons don't make a ring current as an sp3 carbon is there too.Cyclohexe-1-ene has 2 pi electrons but is non-aromatic.It can, I feel, be determined experimentally only if the compound is quassi aromatic or not,i.e, the gain in aromatic stabalization compensates the separation of charge-where the carbocation is highly unstable with no hyperconjugation.

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