1.Theaverage energyof an atomic outer-shell electrons and the atomic structural radius were proposed in this paper.定义了原子核外电子平均能量Ei,结构半径Ri,并通过邻接矩阵定义了新的分子拓扑指数B和系列拓扑指数pB ,把原子间的相互作用情况推广到非相邻原子间的相互作用 ,同时在此基础上进一步提出了系列拓扑...
The average electronegativity is a parameter defined in terms of the electronegativity of the elements and the chemical composition of the compounds. It has been introduced to study the chemical trends of the materials. Previous studies have revealed that the average electronegativity provides an easy ...
Avarage lifetime of a hydrogen atom excited to n=2 state 10−6s find the number of revolutions madfe by the electron on the avarage before it jump to the ground state View Solution Knowledge Check The average life of an excited state of hydrogen atom is of the order 10−8s. The ...
> radii are studied for 28 singly-excited 1snlsinglet and triplet states (0 ≤l≤n≤ 5) of the He atom. In all the cases, the average inner radius is close to 0.75bohr, which indicates that one of the two electrons behaves like the 1selectron in He+. On the other hand, an anal...
The solvent-accessible surface (SAS) [39] and solvent-excluded surface [40,41] (SES, also known as molecular surface or Connolly surface) are the most widely used definitions for protein surface analysis. Each atom of a protein is represented as a sphere with its van der Waals radius. The...
Phases (MN$_{2}$) with the AlB$_{2}$ structure form two groups each having a distinctly different variation of axial ratio as a function of the radius rati... W.,B.,Pearson - 《Proceedings of the Royal Society A Mathematical Physical & Engineering Sciences》 被引量: 0发表: 1979年 ...
The MELD program is employed to evaluate the Slater average potential v(r) felt by an electron at the point r within an atom. The characteristic radius R o... ZZ Yang,ER Davidson - 《International Journal of Quantum Chemistry》 被引量: 130发表: 1997年 Ionization potentials and electron aff...
Sure, splitting the atom was cool, but that feat has, so far, had less impact on my life than this idea. Let's hope it stays that way! Putting a person on the moon was sure nifty, but I feed my family because of the concepts in Figure 7.2, and you probably do, too. In fact...
On the other hand, an analysis of the average outer radius r > > shows that the other electron of the 1snl states behaves approximately like an snl electron in the hydrogen atom. The average outer radius r > > reflects more diffuse character of the singlet electron distribution....
A decomposition of an uncertainty product 〈 p > finds that the largest contribution to 〈 p > comes from an outer electron and a high momentum electron, where and 〈 p > are the usual average electron radius and momentum, respectively.MatsuyamaDepartmentHisashiDepartmentKogaDepartmentToshikatsu...