Kalsiy
20
Ca
Guruh
2
Davr
4
Blok
s
Protonlar
Elektronlar
Neytronlar
20
20
20
Umumiy xususiyatlar
Atom raqami
20
Atom massasi
40,078
Mass raqami
40
Turkum
Ishqoriy yer metallar
Ranggi
Kumush
Radioaktivlik
Yoʻq
From the Latin word calx, lime
Kristall tuzilma
Yuz markazli kubik
Tarix
Calcium was known as early as the first century when the Ancient Romans prepared lime as calcium oxide.
Calcium was first isolated by Sir Humphry Davy in 1808 when he electrolyzed a mixture of lime and mercuric oxide.
Davy was trying to isolate calcium; when he heard that Jöns Jakob Berzelius and Pontin prepared calcium amalgam by electrolyzing lime in mercury, he tried it himself.
Calcium was first isolated by Sir Humphry Davy in 1808 when he electrolyzed a mixture of lime and mercuric oxide.
Davy was trying to isolate calcium; when he heard that Jöns Jakob Berzelius and Pontin prepared calcium amalgam by electrolyzing lime in mercury, he tried it himself.
Qobiqdagi elektronlar soni
2, 8, 8, 2
Elektron konfiguratsiyasi
[Ar] 4s2
The shell of an egg is made up of primarily calcium carbonate
Jismoniy xususiyatlar
Faza
Qattiq modda
Zichlik
1,54 g/cm3
Erish harorati
1115,15 K | 842 °C | 1547,6 °F
Qaynash harorati
1757,15 K | 1484 °C | 2703,2 °F
Eritish issiqligi
8,54 kJ/mol
Bugʻlanish issiqligi
155 kJ/mol
Solishtirma issiqlik sigʻimi
0,647 J/g·K
Yer po‘stidagi miqdori
5%
Olamdagi miqdori
0,007%
Rasm manbalari: Wikimedia Commons (Matthias Zepper)
Pure calcium in a protective argon gas atmosphere
CAS raqami
7440-70-2
PubChem CID raqami
5460341
Atom xususiyatlari
Atom radiusi
197 pm
Kovalentlik radiusi
176 pm
Elektrmanfiylik
1,00 (Poling boʻyicha)
Ionlashish potensiali
6,1132 eV
Molyar hajm
29,9 cm3/mol
Issiqlik oʻtkazuvchanlik
2,01 W/cm·K
Oksidlanish darajasi
1, 2
Qo‘llanilish sohalari
Calcium is used to remove oxygen, sulfur and carbon from alloys.
It is also used as an alloying agent used in the production of aluminum, beryllium, copper, lead, and magnesium alloys.
Calcium is used as a reducing agent in the extraction of other metals, such as uranium, zirconium, and thorium.
Calcium carbonate is used in manufacturing cement and mortar, lime and limestone.
It is also used as an alloying agent used in the production of aluminum, beryllium, copper, lead, and magnesium alloys.
Calcium is used as a reducing agent in the extraction of other metals, such as uranium, zirconium, and thorium.
Calcium carbonate is used in manufacturing cement and mortar, lime and limestone.
Calcium is considered to be non-toxic
Izotoplar
Barqaror izotoplar
40Ca, 42Ca, 43Ca, 44Ca, 46CaBeqaror izotoplar
34Ca, 35Ca, 36Ca, 37Ca, 38Ca, 39Ca, 41Ca, 45Ca, 47Ca, 48Ca, 49Ca, 50Ca, 51Ca, 52Ca, 53Ca, 54Ca, 55Ca, 56Ca, 57Ca