Vlastnosti

CAS Number7440-70-2
PubChem CID5460341
Atomový poloměr197
Molární objem29,9
Atomová hmotnost40,078
Bloks
Teplota varu1 484
Bulk Modulus
KategorieKovy alkalických zemin
Krystalografická soustavaKrychlová plošně centrovaná
BarvaStříbrná
Kovalentní poloměr176
Hustota1,54
Electrical Resistivity
Elektronová konfigurace[Ar] 4s2
Elektronů v obalu2, 8, 8, 2
Elektronegativita1
Electrons20
Skupina2
Skupenské teplo tání8,54
Skupenské teplo varu155
Ionizační potenciál6,113
Magnetic Ordering
Magnetic Susceptibility
Hmotnost40,078
Mass Number20
Teplota tání842
NázevVápník
Neutrony20
Atomové číslo40
Oxidační čísla1, 2
Perioda4
SkupenstvíPevná
Poisson Ratio
Protony20
Shear Modulus
Měrná tepelná kapacita0,647
ZnačkaCa
Tepelná vodivost2,01
Van der Waals radius
Young's Modulus
Hojnost
Hojnost v zemské kůře5%
Hojnost ve vesmíru0.007%
Ca Vápník 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"

Izotopy tennessinu

Standard Atomic Weight

40.078(4)

Stabilní izotopy

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

Nestabilní izotopy

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

Tennessin je škodlivý díky své radioktivitě
Tennessine is historically known as eka-astatine
Tennessine is used for scientific research purposes only.