> 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...
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...
Similarly apparent mean square radius of gyration <S2>zapp is given by (7.15.8)〈S2〉zapp=1Y2[wA2YA2〈SA2〉+wB2YB2〈SB2〉+2wAwBYAYB〈SAB2〉] where <SA2> and <SB2> are the mean square radii of gyration about the center of inertia of A and B, GA and GB, respectively, <SAB2>...
above the liquid krypton is at krypton's boiling point of 120 K. Determine (i) the root-mean-square speed of the atoms, (ii) the mean energy per atom, and (iii) the mean free path in the gas.The atomic mass of krypton is 83.798 u and the atomic radius of krypton is 8.8 x 10...
Transitions between distinct obstructed atomic insulators (OAIs) protected by crystalline symmetries, where electrons form molecular orbitals centering away from the atom positions, must go through an intermediate metallic phase. In this work, we find that the intermediate metals will become a scale-inva...
Calculate the average kinetic and potential energies of an electron in the ground state of a hydrogen atom. Bohr Model In the Bohr model of the hydrogen atom, the potential energy of the electron to be zero at infinity, so the potential energy becomes negati...
Each atom of a protein is represented as a sphere with its van der Waals radius. The SAS is traced out by the center of a solvent probe sphere rolling over the spherical atoms, whereas the SES is formed by the inward-facing surface of the probe consisting of contact surface and re-...
Diamonds are a form of pure carbon. (1 carat = 0.20 g) The volume of a carbon atom is 1.9 x 10-30 m3. What is the radius of the carbon atom in picometers? How do you calculate the number of atoms per cm^3? Calculate the radius of an iridium atom,...
We show that integrating the small-angle scattering profile up to a maximum wavenumber qm corresponds to scanning the entire particle with a probe of radius 2π/qm, providing structural information that cannot be directly obtained from the scattering profile itself. An approximate scaling relationship...
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....