050100Atomic number/www.webelements.com H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu...
118 elements and their symbols and atomic numbers name of the element symbol of the element atomic number hydrogen h 1 helium he 2 lithium li 3 beryllium be 4 boron b 5 carbon c 6 nitrogen n 7 oxygen o 8 fluorine f 9 neon ne 10 sodium na 11 magnesium mg 12 aluminium al 13 silicon...
The number of protons in the nucleus of an atom is its atomic number (Z). This is the defining trait of an element: Its value determines the identity of the atom. For example, any atom that contains six protons is the element carbon and has the atomic number 6, regardless of how ...
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 Zr-96 (Zirconium, atomic number Z = 40, mass number A = 96). Landolt-Brnstein Homepage Introduction Index...
The main building blocks of atomic nucleinuclei are protons and neutrons, and it is convenient to describe the composition of an atom in terms of the number of protons and neutrons present in its nucl 关键词: Mass spectrometry Isotopic abundances 出版时间: 1998 ISBN: 9780412755002 被引量:...
Mass number, in nuclear physics, the sum of the numbers of protons and neutrons present in the nucleus of an atom. The mass number is commonly cited in distinguishing among the isotopes of an element, all of which have the same atomic number (number of p
with an assigned value of 16. The unit of atomic mass was thereby defined as1/16the mass of an oxygen atom. In 1929 it was discovered that natural oxygen contains small amounts of two isotopes slightly heavier than the mostabundantone and that the number 16 represented a weighted average of...
Atomic Number, ZNameAtomic Mass Number, ASymbolAtomic Mass (u)Percent Abundance or Decay ModeHalf-life, t1/2 0 neutron 1 [latex]n[/latex] 1.008 665 [latex]{\beta }^{-}[/latex] 10.37 min 1 Hydrogen 1 [latex]{\text{}}^{1}\text{H}[/latex] 1.007 825 99.985% Deuterium 2 [late...
The second major effect which determines trends in atomic radius is thechargeof the nucleus, which increases with theatomic number,Z. The nucleus is positively charged, and tends to attract the negatively-charged electrons. Passing along a period from left to right, the nuclear charge increases ...
Atomic Number:40 Symbol:Zr Atomic Weight:91.224 Discovery:Martin Klaproth 1789 (Germany); zircon mineral is mentioned in biblical texts. Electron Configuration:[Kr] 4d25s2 Word Origin:Named for the mineral zircon. Persianzargun: gold-like, which describes the color of the gemstone known as zirc...