Symbol: KAtomic Number: 19Atomic Weight: 39.0983Classification: Alkali metalPhase in ~ Room Temperature: SolidDensity: 0.86 grams per cm cubedMelting Point: 63.38°C, 146.08°FBoiling Point: 759°C, 1398°FDiscovered by: teacher Humphry Davy in 1807Potassium is the fourth element in the first column that the routine table. The is classified together an alkali metal. Potassium atoms have actually 19 electrons and 19 protons through one valence electron in the external shell. Potassium is taken into consideration chemically comparable to sodium, the alkali metal above it ~ above the routine table.Characteristics and also PropertiesUnder standard conditions potassium is a soft silvery-white metal. That is for this reason soft the it can be easily cut with a knife. Once cut, the exposed metal tarnishes quickly and forms a dull oxide coating.Potassium has actually a very low melting suggest such that even a candle can reason it come melt. Once it burns, the produces a pale purple colored flame. Potassium also has a very low density and also is the second least dense metal after ~ lithium. That is for this reason light the it have the right to float in water.Chemically, potassium is a very active metal. It reaction violently as soon as coming into call with water, creating heat and hydrogen gas. It also reacts with numerous other elements and also substances such as oxygen, acids, sulfur, fluorine, and nitrogen.

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Where is potassium found on Earth?
Because potassium reacts so easily with water, that is not uncovered in the elemental form in nature. Rather it is uncovered in assorted minerals such together sylvite, carnallite, langbeinite, and kainite. Many minerals the contain potassium are referred to as potash.Making up about 2.1% of the load of the Earth"s crust, potassium is the eighth most abundant element in the crust. That can additionally be discovered in ocean water wherein it is also about the eighth many abundant element.How is potassium used today?The biggest use the potassium is potassium chloride (KCl) i m sorry is used to do fertilizers. This is since potassium is necessary for plant growth.Industrial applications because that potassium include soaps, detergents, gold mining, dyes, glass production, gunpowder, and also batteries.Potassium likewise plays a vital role in our bodies. The is offered in muscle contraction, fluid and pH balance, bone health, and also helps to prevent kidney stones. It is about the eighth most abundant element in the human body by weight.How to be it discovered?Potassium was an initial isolated through English chemist teacher Humphry Davy in 1807. That used electrical power to different the element from the salt potash.Where did potassium gain its name?Potassium gets its name from the salt potash native which potassium was first isolated. The K symbol because that the element comes from the Latin indigenous "kalium", which way potash.IsotopesThere room three isotopes of potassium that occur naturally: K-39, 40, and also 41. The bulk (93%) that potassium discovered in nature is K-39.
Interesting Facts about Potassium
Potassium chloride (KCl) is periodically used together a substitute because that table salt. The USDA proposal that adults consume 4.7 grams that potassium each day.A little amount of potassium deserve to taste sweet. A higher concentration have the right to taste bitterness or salty.Potassium bicarbonate is the chemical name for baking soda. It is offered in fire extinguishers, baking powders, and antacids.Some great sources that potassium in our diet incorporate bananas, avocados, nuts, chocolate, parsley, and also potatoes.More ~ above the Elements and also the routine TableElementsPeriodic Table
Alkali MetalsLithiumSodiumPotassiumAlkaline planet MetalsBerylliumMagnesiumCalciumRadiumTransition MetalsScandiumTitaniumVanadiumChromiumManganeseIronCobaltNickelCopperZincSilverPlatinumGoldMercuryPost-transition MetalsAluminumGalliumTinLeadMetalloidsBoronSiliconGermaniumArsenicNonmetalsHydrogenCarbonNitrogenOxygenPhosphorusSulfurHalogensFluorineChlorineIodineNoble GasesHeliumNeonArgonLanthanides and ActinidesUraniumPlutonium
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