Potassium Symbol:K on thePeriodic Table Potassium Atomic Weight:39.0983 Discovery:Sir Humphrey Davy 1807 (England) Electron Configuration:[Ar]4s1 Potassium Word Origin:English potash pot ashes; Latinkalium, Arabicqali: alkali. Isotopes:There are 17 isotopes of potassium. Natural potassium is composed ...
38K Half-life Fermion, 19p 19n 7.636666666667 mSpin 3 Parity 1 Atomic Weight37.969081184 AbundanceNone Mass Excess-28.800691MeV Binding Energy8.438057MeV Magnetic Moment1.371 μ Quadrupole MomentN/A Show Element Pictures. Also show decay chains leading to this isotope. ...
On the periodic table, it increases across the period and up the group as the relative nucleus strength increases. Answer and Explanation: All these elements are metals that have relatively low electronegativities. They f...
aon descending a group in the periodic table such as lithium,sodium,potassium,rubidium,caesium,the size of the atoms increases due to the effect of extra shells of electrons being added;this outweighs the effect of increased nuclear charge 在周期表里下降一个小组例如锂,钠,钾,铷,铯,原子增量的...
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What do you think of when you look at element number 19 on the periodic table? As a chemist, I suppose my head should be filled with images of chemically related things involving potassium, such as zeolite structures being charge-balanced by K~+, but instead I think of what has to be ...
See Periodic Table. [From earlier potass, potash (from which it was first obtained), from French potasse, from Dutch potas : pot, pot (from Middle Dutch; akin to Old English pott) + as, ash (from Middle Dutch asche; see as- in Indo-European roots).] po·tas′sic adj. American ...
Potassium is a soft, silver-white metal. Physically and chemically it resembles the otheralkali metalsin Group 1 of theperiodic table. It is extremely reactive, more so than sodium. It combines so readily with oxygen that it is usually stored submerged in kerosene or some other hydrocarbon, ou...
Potassium is one of the alkali metals. The alkali metals are the elements that make up Group 1 (IA) of the periodic table. The periodic table is a chart that shows how chemical elements are related to one another. The alkali metals also include lithium, sodium, rubidium, cesium, and fran...
The outer shell of a potassium atom contains one valence electron and 19 electrons. Potassium is chemically comparable to sodium, the alkali metal on the periodic table above it. Potassium is a soft silvery-white metal under normal circumstances. It’s so soft that you can cut it with a kni...