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CAS Number7440-70-2
PubChem CID5460341
Атомен радиус197
Моларен обем29,9
Атомна маса40,078
Блокs
Температура на кипене1 484
Bulk Modulus
КатегорияАлкалоземен метал
Кристална структураКубична стенноцентрирана решетка
ЦвятСребърен
Ковалентен радиус176
Плътност1,54
Electrical Resistivity
Електронна конфигурация[Ar] 4s2
Електрон на обвивка2, 8, 8, 2
Електроотрицателност1
Electrons20
Група2
Топлина на сливането8,54
Топлина на изпаряване155
Йонизационен потенциал6,113
Magnetic Ordering
Magnetic Susceptibility
Маса40,078
Mass Number20
Температура на топене842
ИмеКалций
Неутрони20
Атомен номер40
Оксидационни държави1, 2
Период4
ФазаТвърди
Poisson Ratio
Протони20
Shear Modulus
Специфичен топлинен капацитет0,647
СимволCa
Топлопроводимост2,01
Van der Waals radius
Young's Modulus
Изобилие
Изобилие в земната кора5%
Изобилие в вселената0.007%
Ca Калций 20 40.078 2 4 s 20 839.0 1484.0 [Ar] 4s2 2 8 8 2 1.55 5% Silver Cubic: Face centered 1.0 1.034 {"1":"589.8","2":"1145.4","3":"4912.4","4":"6491","5":"8153","6":"10496","7":"12270","8":"14206","9":"18191","10":"20385","11":"57110","12":"63410","13":"70110","14":"78890","15":"86310","16":"94000","17":"104900","18":"111711","19":"494850","20":"527762"} 590 2.37 174 2 1.97 29.9 8.53 154.67 0.647 200.0 0 Solid, Paramagnetic, Conductor, AlkalineEarthMetal, Metal, Stable, Natural KAL-si-em Fairly hard, silvery-white metal. Fifth most abundant element in the earth's crust (41,500 ppm). Occurs only in compounds. Used by many forms of life to make shells and bones. Virtually no use for the pure metal, however two of its compounds are, lime (CaO) and gypsum (CaSO4), are in great demand by a number of industries. Obtained from minerals like chalk, limestone & marble. Pure metal is produced by replacing the calcium in lime (calcium carbonate, CaCO3) with aluminium in hot, low pressure retorts. Jcvac9__YN4 Calcium
Tennessine was identified in 2010 by a team composed of Russian scientists at Joint Institute for Nuclear Research, Dubna and American scientists at the Lawrence Livermore National Laboratory.

It was produced by the bombardment of berkelium with calcium.

Ununseptium was the temporary IUPAC systematic element name. Named after the region of Tennessee 20 1808 Sir Humphrey Davy England From the Latin word "calx" meaning "lime"

Isotopes of Tennessine

Standard Atomic Weight

40.078(4)

Стабилни изотопи

40Ca 42Ca 43Ca 44Ca 46Ca 48Ca

Нестабилни изотопи

34Ca 35Ca 36Ca 37Ca 38Ca 39Ca 41Ca 45Ca 47Ca 49Ca 50Ca 51Ca 52Ca 53Ca 54Ca 55Ca 56Ca 57Ca

Tennessine is harmful due to its radioactivity
Tennessine is historically known as eka-astatine
Tennessine is used for scientific research purposes only.