屏蔽效应(Shielding Effect) 有效核电数荷(effective nuclear charge) 化学键(chemical bond) 分子内作用力(intramolecular force) 分子间作用力(intermolecular force) 金属晶体(metallic crystal) 离子晶体(ionic crystal) 分子晶体(molecular crystal) 离子键(Ionic Bond) 静电作用(electrostatic) 晶格(crystal lattice) 熔...
The higher values for Eint for Ru3+ and Os3+ may be due to the high penetration effect or effective nuclear charge and hence stronger metal–ligand interactions. As we go down the Fe group, the penetration effect increases due to more diffuse orbitals and hence it was reflected in the ...
Thus the effective nuclear charge is increased and the electrons are pulled in. A positive ion is therefore smaller than the corresponding atom and the more electrons removed ( that is, the greater the charge on the ion), the smaller it becomes. Atomic radius Na 0.157 nm Atomic radius Fe ...
The first steps of charge transfer in molecules after their interaction with light occur on an ultrafast timescale. Now, by combining attosecond pump/few-femtosecond probe spectroscopy with quantum chemistry calculations, it has been shown that a concerted nuclear and electronic motion drives electron ...
A thin yet effective LiF-containing protection layer on NMC can effectively stabilize the NMC-PEO interface with a greatly improved lifespan of NMC|PEO|Li bat-teries. This work deepens the understanding of degradations in high-voltage solid-state polymer batteries. Modulating of MoSe2 functional...
Thus the effective nuclear charge is increased and the electrons are pulled in. A positive ion is therefore smaller than the corresponding atom and the more electrons removed ( that is, the greater 批注 [SD1]: 排, 行 批注 [SD2]: Horizon [] n. 地平线 ...
charge of +1, and the number of protons in an atomic nucleus distinguishes one type of chemical atom from another. The simplest atom of all,hydrogen, has a nucleus composed of a single proton. The neutron has very nearly the same mass as the proton, but it has no charge. Neutrons are...
of ion-target combinations using a basis of exact molecular eigenstates for a model system of one electron in the field of two effective nuclear charges... K Taulbjerg,J Vaaben,B Fastrup - 《Physical Review A》 被引量: 85发表: 1975年 Stereochemical effects in the quenching of Na*(3 ...
(b) 1st mark: 3 Number of protons increases / increasing nuclear charge / increasing effective nuclear charge IGNORE Just ‘the atomic number increases’ (1) 2nd mark: ‘Shielding Same shielding / same number of increases’ (0) (occupied) shells / electron removed nd for 2 mark from the ...
The radioelement technetium is central in spent nuclear fuel reprocessing and waste remediation, the development of new imaging agents, as well as in fundamental science of transition metals. Here, the authors review the pivotal role of99Tc NMR spectroscopy over the past two decades and present pro...