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Natural rubidium has an average

The half-life of rubidium-87 (natural absorbance 27.83%) is 5.1x10^11 years. What mass of rubidium is present if an average
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2. asked by Chemistry
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Natural rubidium has an average mass of 85.4678 amu and is composed of isotopes85Rb (mass = 84.9117 amu) and 87Rb. The ratio of
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2. asked by Gil
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Rubidium has 2 common isotopes, Rb 85 and Rb 87. If the abudance of Rb 85 is 70 percent and the abundance of Rb 87 is 30
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2. asked by Lena
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rubidium is soft, silvery-white metal that has two common isotopes, ^85 Rb and ^87 Rb. if the abundance of ^85 Rb is 80.2% and
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2. asked by Anonymous ;)
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rubidium is the fourth element in group 1. predict the following properties of rubidium and its compunds:A. appearence B.
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2. asked by chelsea
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Which element would most likely lose electrons to form positive ions when bonding with other elements?• rubidium (Bb) O iodine
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Which statement correctly compares the number of protons and electrons in atoms of rubidium (R) and calcium (Ca)?• Rubidium
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Which statement correctly compares the number of protons and electrons in atoms of rubidium (Rb) and calcium (Ca)?(1 point)
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Which statement correctly compares the number of protons and electrons in atoms of rubidium (Rb) and calcium (Ca)?(1 point)
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A laser emitting light with a wavelength of 480 nm is directed toward the surface of rubidium metal. The work function for
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2. asked by Charles
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