atomic number 91 phr. 【化学】原子序数(指元素在周期表中按次序排列的序号)91镤 atomic number n.[化]原子序数(指元素在周期表中按次序排列的序号) atomic number 11 phr. 【化学】原子序号11钠 atomic number 48 phr. 【化学】原子序号48镉 atomic number 71 phr. 原子序数71;镥 atomic number ...
Define atomic number 91. atomic number 91 synonyms, atomic number 91 pronunciation, atomic number 91 translation, English dictionary definition of atomic number 91. Noun 1. atomic number 91 - a short-lived radioactive metallic element formed from uranium
91 is the atomic number of protactinium, an actinide. WikiMatrix Of the gas in the ISM, by number 91% of atoms are hydrogen and 8.9% are helium, with 0.1% being atoms of elements heavier than hydrogen or helium, known as "metals" in astronomical parlance. WikiMatrix Protactinium or ...
Twitter Google Share on Facebook Dictionary </>embed</> metallic elem... metal Pa protoactinium protactinium atomic num... noun Synonyms for atomic number 91 nouna short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead ...
1.Based on the number set, a new commutative semi-group is established in the integer number and extended in number fields of rational number, real number and the complex number. 在数集的基础上,在整数域上建立了一个新的交换半群,并在有理数域、实数域和复数域上进行了推广; 2.Based on the ...
It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope As-91 (Arsenic, atomic number Z = 33, mass number A = 91). Landolt-Brnstein Homepage Introduction Index...
Proton radioactivity of neutron-deficient nuclei with atomic numbersZ=51–91 and mass number 104–211 is investigated using the analytical super-asymmetric fission (ASAF) model — a model used to studyα-decay and cluster radioactivity since 1984. The experimentalQpvalues are compared with calculated...
atomic number and frequency differences in spectral seriesThe law of Rydberg, and Kayser and Runge that the square root of the doublet and triplet differences is proportional to the atomic weights, ... H Bell 被引量: 0发表: 0年 Improvements in or relating to voltage peak value comparison ...
The atomic-number dependence of the relativistic effects was examined by means of bond overlap population analysis. It is found that the relativistic effects become remarkably important for the molecules containing the elements with atomic number larger than 50....
Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total...