(more)See all videos for this article atomic number, the number of a chemical element in the periodic system and on the periodic table that equals the number of protons in the nucleus of the atom. The elements are arranged on the table in order of increasing number of protons in 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 Y-111 (Yttrium, atomic number Z = 39, mass number A = 111). Landolt-Brnstein Homepage Introduction Index...
Try Britannica Premium for free and discover more. Subscribe Chemical elements elementsymbolatomic numberatomic weight Elements with an atomic weight given in square brackets have an atomic weight that is given as a range. Elements with an atomic weight in parentheses list the weight of the isotope...
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 Y-91 (Yttrium, atomic number Z = 39, mass number A = 91). Landolt-Brnstein Homepage Introduction Index...
Atomic Number, ZNameAtomic Mass Number, ASymbolAtomic Mass (u)Percent Abundance or Decay ModeHalf-life, t1/2 0 neutron 1 nn 1.008 665 β−β− 10.37 min 1 Hydrogen 1 1H1H 1.007 825 99.985% Deuterium 2 2H or D2H or D 2.014 102 0.015% Tritium 3 3H or T3H ...
It is used in lasers as an active laser medium material with holmium, chromium and yttrium aluminium garnet. It can lase at 2080 nm and is used in military applications, medicines, meteorology etc. It is used as an X – ray source. These types of X-ray devices are used in medical and...
atomic number 68noun a trivalent metallic element of the rare earth group; occurs with yttrium +添加翻译 英文-斯洛文尼亚文字典 er noun Open Multilingual Wordnet erbij noun Open Multilingual Wordnet 显示算法生成的翻译 将“atomic number 68"自动翻译成 斯洛文尼亚文 ...
number of protons and neutrons. For example, fluorine atoms typically have 9 protons and 10 neutrons, and therefore have an atomic mass of 19 amu. When describing atoms and elements, there are three other numbers that may be present in a periodic table:atomic number,mass number, andaverage ...
What is lutetium 176 used for? Lutetium-176 is a relatively abundant (2.5%) radioactive isotope with a half-life of about 38 billion years, usedto determine the age of minerals and meteorites. Lutetium usually occurs in association with the element yttrium and is sometimes used in metal alloy...
Define atomic number 65. atomic number 65 synonyms, atomic number 65 pronunciation, atomic number 65 translation, English dictionary definition of atomic number 65. Noun 1. atomic number 65 - a metallic element of the rare earth group; used in lasers; oc