Rubidium

By: Dalena Thai
 * Chemistry Project

Name: Rubidium Symbol: RB Atomic Number: 37 Atomic Mass: 85.4678 Number of protons: 37 Number of Electrons: 37 Number of Neutrons: 48 Density: 1.53 grams per cubic centimeter Phase at room temperature: Solid Element Classification: Metal Electron Configuration: [Kr] 5s1 1s22s2p6 3s2p6d10 4s2p65s1

(Physical Properties) The element Rubidium is soft and silvery white metal at room temp. The melting piont is only around 40 degrees which make it possible to melt on a hot day.

(Chemical Properties) Rubidium is one of the most reactive elements, it is also the most reactive mental elements. Which make it form oxides and reacts violently in water.

(History) Rubidium was discover by two guys name Robert Bunsen, and G. Kirchhoff in Heidelberg by a spectroscopic examination of the mineral lepidolite. It was discover when they were analyzing samples of mineral leipidolite. The sample made a set of deep red lines which they had never seen before. This element is used in vacuum tubes as a getter, a material that blend with and removes trace gases from vacuum tubes. It is also used in the manufacture of photo cells and in the special glasses.

(Medical Uses) Rubidium is believed to stimulate animals metabolism as a result of its chemical similarity to potassium.

(Common Forms) Rubidium forms a large number of compounds even though some of them has any significant commercial application. Some of the compounds are - Rubidium Chloride (RbC1) - Rubidium Monoxide (Rb2O) - Rubidium Fluoride (RbF) - Rubidium Sulfate (Rb2SO4) - Rubidium Copper Sulfate (Rb2O4 CuSO4 Gh2O)

(Isotopes) There is 30 Isotopes of Rubidium, there differences is that they have different atomic mass which make it have different Half Life ** (Picture of the element)
 * ~ Isotope ||~ Atomic Mass ||~ Half-Life ||
 * Rb71 || 70.965 ||  ||
 * Rb72 || 71.959 || < 1.2 ms ||
 * Rb73 || 72.95 || < 30 ns ||
 * Rb74 || 73.944 || 64.9 ms ||
 * Rb75 || 74.9386 || 19 seconds ||
 * Rb76 || 75.9351 || 36.5 seconds ||
 * Rb77 || 76.9304 || 3.77 minutes ||
 * Rb78 || 77.9281 || 17.66 minutes ||
 * Rb79 || 78.9231 || 22.9 minutes ||
 * Rb80 || 79.9225 || 34 seconds ||
 * Rb81 || 80.919 || 4.576 hours ||
 * Rb82 || 81.9182 || 1.273 minutes ||
 * Rb83 || 82.9151 || 86.2 days ||
 * Rb84 || 83.9144 || 32.77 days ||
 * Rb85 || 84.9118 || Stable ||
 * Rb86 || 85.9112 || 18.631 days ||
 * Rb87 || 86.9092 || 4.75E 10 years ||
 * Rb88 || 87.9113 || 17.78 minutes ||
 * Rb89 || 88.9123 || 15.15 minutes ||
 * Rb90 || 89.9148 || 158 seconds ||
 * Rb91 || 90.9165 || 58.4 seconds ||
 * Rb92 || 91.9197 || 4.492 seconds ||
 * Rb93 || 92.922 || 5.84 seconds ||
 * Rb94 || 93.9264 || 2.702 seconds ||
 * Rb95 || 94.9293 || 377.5 ms ||
 * Rb96 || 95.9343 || 0.199 seconds ||
 * Rb97 || 96.9373 || 169.9 ms ||
 * Rb98 || 97.9417 || 114 ms ||
 * Rb99 || 98.945 || 50.3 ms ||
 * Rb100 || 99.95 || 51 ms ||
 * Rb101 || 100.953 || 32 ms ||
 * Rb102 || 101.959 || 37 ms ||



(Cited) www.google.com www.wikianswers.com www.webelement.com http://www.periodictable.com/