However, these oligomers have very different electronic properties with band gaps below 0.2 eV for the chain [H2PBH2]15 and more than 5 eV for the ring isomer [H2PEH2]15. The MOs in the ring oligomers are highly delocalized, while, for the chain isomers, HOMO and LUMO are localized at...
Using four different model potentials for silver, we have calculated the structural and energetic properties of the three energetically lowest isomers of A... A Djanie - 《J.phys.chem.c》 被引量: 15发表: 2007年 Why should Austria be different from Germany? the two recent nationality reforms...
If you do have one of these conditions, this knowledge will help you address it early. ZOE recently conducted The Big Poo Review, the world’s largest study on bowel habits, and our research confirmed that you can learn a lot from your poop. Our at-home test uses a poop sample to ...
Elements in group 18 (noble gases) have: a. Metallic character. b. Very low reactivity. Helium and lithium are two elements that differ only in one electron. Why do you think they exhibit such different chemical and physical behavior?
To explain why cis and trans isomers do not change into one another under ordinary conditions, we can break down the explanation into several key points:1. Understanding Isomerism: - Isomers are compounds that have the same
Which pair of elements do you expect to be most similar? Why? a) N and Nib) Mo and Snc) Na and Mgd) Cl and Fe) Si and P Periodic Table: The Periodic Table of Elements is sorted in such a way that researchers can rapidly percei...
Complete answer: Maleic acid and fumaric acid are geometrical isomers. Geometrical isomerism is possible when different groups are attached to the double bonded carbon atoms. Which of the following is strongest acid? The strongest acid is perchloric acid on the left, and the weakest is ...
Consumer experts have long recommended against buying Extended Service Contracts (ESCs) with products, since they are rarely cost effective. A new study in the Journal of Consumer Research examines the reasons why so many people ignore the experts' advic
Notably, the four comparison polymers are all exclusively C-H containing polymers and thus might be expected to have superficially similar degrees of stickiness despite having very different melting points and other bulk molecular properties, and this is what the numbers kind of show, at least when...
Why are L-isomers more prevalent in biological systems than their R stereo chemical counterpart? What are things that can disrupt neurotransmitter? What are the effects of that disruption? How do neurotransmitters affect the taste perception of different foods? E...