
Member • Aug 27, 2014
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Member • Aug 31, 2014
Administrator • Aug 31, 2014
You will find these links helpful -Akanksha Guptaactually i want help in entrance exam of TCS which happens generally in college the aptitude one ...........tips for that what part to focus more or less about that
Member • Aug 31, 2014
Member • Aug 31, 2014
Administrator • Aug 31, 2014
Akanksha Guptano i haven't filled up next step application form . plz help me in that too
Member • Aug 31, 2014
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Member • Sep 23, 2014
Member • Sep 23, 2014
Member • Sep 24, 2014
Well thats because sulphur shows variable valencies and the oxidation state in which S combine with Tc is 4.Shashank MogheThis sounds very stupid. But TCS got me reading and since this is a chemical engg backdrop, Why does Technetium form a disulphide and not a sulphide?
Why TcS2 and not TcS?
Valency of Tc = 2
Valency of S = 6
If I were a TCS panelist, I would ask this to a Chemical Engineer 😀
Member • Sep 25, 2014
Yes of course you are 😀 One thing is still not clear to me. How is the covalent bond formed with a valency of 4 ? With two S atoms and one Tc atom?Neda HashmiWell thats because sulphur shows variable valencies and the oxidation state in which S combine with Tc is 4.
So, am I hired?? 😎😎
Member • Sep 28, 2014
You intrigued me. I did some research on Tc and found out that along with S, Tc also shows variable valencies.Shashank MogheYes of course you are 😀 One thing is still not clear to me. How is the covalent bond formed with a valency of 4 ? With two S atoms and one Tc atom?
Member • Sep 28, 2014
Neda HashmiYou intrigued me. I did some research on Tc and found out that along with S, Tc also shows variable valencies.
Now, we have two possibilities of structure of TcS2,
1) If S is saturated, and Tc shows valency of 2, it can form cross-linked structure.
2) Second possibility is that both have the valency of 4 and are linked by double bond on each side.
I am not sure though. I simply did my chemistry. but the reason behind the structure is valency only.
Member • Oct 6, 2014
Member • Oct 6, 2014
Member • Oct 7, 2014
Member • Oct 7, 2014