'Common isotopes' presentation slideshows

Notes: Monday, October 29, 2012

Notes: Monday, October 29, 2012. Topic: Ions and Isotopes EQ: How do the structures of atoms differ?. Ions. Ion: An atom or group of atoms that has lost or gained one or more electrons and has a negative or positive charge When an atom loses an electron it becomes positively charged

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Rubidium is a soft, silvery-white metal that has two common isotopes, Rubidium-85 and Rubidium-87. If the abundance of Rubidium-85 is 72.2% and Rubidium-87 is 27.8%, what is the average atomic mass?.

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Atomic Mass

Atomic Mass. Atomic Mass. The weighted average of all natural occurring isotopes of that element Example: Lithium = 6.941 amu Atomic number closest to 7, therefore most isotopes of lithium of a mass number of 7. Rubidium has two common isotopes, 85Rb and 87Rb. If the abundance of

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