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Alkali Metals ALKALI METALS Rubidium Rubidium Classification: Alkali Metal Atomic Number: 37 Atomic Mass: 85.4678 Atomic Symbol: Rb Color: A soft, silvery metal Melting Point: 102°F Boiling Point: 1,270°F Density: 1.532 grams per cubic centimeter Smell: No smell State: Solid Uses: Used in vacuum tubes, used in manufacture of photocells and in special glasses, and it might be used as a propellant in ion engines on spacecraft. The atomic symbol is Rb because the man who discovered Rubidium was named Robert Bunsen. Potassium Potassium Atomic symbol K Atomic Mass: 39.09 Atomic Number: 19 Physical properties: Silvery-white Soft metal, melting point 145° F, boiling point 1,420° F, density 0.862 g/cm3 State of matter: solid Smell: No Odor It is used in fertilizers, as a salt substitute and to produce other chemicals. Potassium hydroxide is used to make soaps, detergents and drain cleaners. How Are Alkali Metals Simular? All Alkaili Metals: have low boiling and melting points. Very soft metals, able to cut with a knife.
Have low densities therefore they float on water. They react quickly with water producing hydroxides and hydrogen gas. Our Famliy Album Larry Lithium Josh Youmans Hailey Riddle Collin Padgett Lithium Lithium (Li) is one of the six alkali metals. It is found in places like Australia, China, and Zimbabwe.
Lithium is known as a soft metal with 3 protons, 4 neutrons, and 3 electrons. This element has many defining properties such as: Color: Silver Melting Point: 357°F Boiling Point: 2,447°F Density: 0.534 g/cm3 Phase at Room Temp: solid (soft metal) Classification: Alkali Metal Interacting Element: Hydrogen (H) Lithium is particularly used for the treatment of bipolar disoder. Other uses include batteries and aircraft manufacturing. What Is An Alkali Metal? The alkali metals are a group in the periodic table made up of the chemical elements lithium, sodium, potassium, rubidium, cesium, and francium.
Alkali Metals and the Alkaline Earth metals. The Group 1 elements have a specific family name—alkali metals. Each alkaline earth metal is denser and harder and has a higher melting point than the alkali metal in the same period. Alkaline earth metals are reactive, but not as reactive as the alkali metals. Class 11 S-Block Elements (Alkali Metals) - PPT, Class 11 Chemistry Summary and Exercise are very important for perfect preparation. You can see some S-Block Elements (Alkali Metals) - PPT, Class 11 Chemistry sample questions with examples at the bottom of this page.
Perry the Potassium Randy Rubidium Lithium's Name Origin The word 'lithium' is derived from the Greek word for stone, 'Lithos', because it was first discovered in stone. Lithium is one of several alkali metals discovered and named in the early 1800s.
Facts About Alkali Metals
Rubidium was discovered by Kirchhoff and Bunsen, in 1861, when they noticed the existence of new spectral lines in a lepidolite sample. Its name derives from the Latin rubidus (dark-red), due to the zone of its spectral lines. Rubidium Name Origin Potassium's Name Origin Potassium was first isolated by English chemist Sir Humphry Davy in 1807. He used electricity to separate the element from the salt potash. Potassium gets its name from the salt potash from which potassium was first isolated.
The K symbol for the element comes from the Latin word 'kalium', which means potash.