How many valence electrons does strontium have?
The periodic table of the elements online
*Share in the natural isotope mixture of the isolable, stable or very long-lived element. The composition of the isotope mixture is stable within narrow limits for any location of the element.
swell for the mass defects and half-lives: http://www.nndc.bnl.gov/chart/. The Atomic masses correspond to the mass numbers in u minus the proportional mass defect. Core masses corresponds to atomic masses less the electron masses, whereby the binding energy of the electrons Not taken into account so that they deviate from the actual value by a few eV! The Half-lives are also literature values from the named source. All other information (service life, decay constant) is calculated from them. The Decay energies are calculated from the differences in the masses of the particles involved in the decay; it is also done automatically by a script.
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