Kalsiyum
20
Ca
Grup
2
Periyot
4
Blok
s
Protonlar
Elektronlar
Nötronlar
20
20
20
Temel Özellikleri
Atom numarası
20
Atom ağırlığı
40,078
Kütle Numarası
40
Kategori
Alkali toprak metalleri
Renk
Gümüşi
Radyoaktif
Hayir
From the Latin word calx, lime
Kristal yapısı
Yüzey merkezli kübik
Tarihi
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.
Enerji seviyesi başına Elektronlar
2, 8, 8, 2
Elektron dizilimi
[Ar] 4s2
The shell of an egg is made up of primarily calcium carbonate
Fiziksel Özellikleri
Faz
Katı
Yoğunluk
1,54 g/cm3
Ergime noktası
1115,15 K | 842 °C | 1547,6 °F
Kaynama noktası
1757,15 K | 1484 °C | 2703,2 °F
Ergime ısısı
8,54 kJ/mol
Buharlaşma ısısı
155 kJ/mol
Isı kapasitesi
0,647 J/g·K
Dünya kabuğundaki bulunulabilirliği
5%
Evrendeki bulunulabilirliği
0,007%
CAS Numarası
7440-70-2
PubChem CID Numarası
5460341
Atom Özellikleri
Atom yarıçapı
197 pm
Kovalent yarıçapı
176 pm
Elektronegatifliği
1,00 (Pauling ölçeği)
İyonlaşma enerjisi
6,1132 eV
Atomik Hacim
29,9 cm3/mol
Isıl iletkenlik
2,01 W/cm·K
Yükseltgenme seviyeleri
1, 2
Uygulamalar
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
İzotoplar
Kararlı izotoplar
40Ca, 42Ca, 43Ca, 44Ca, 46CaKararsız izotoplar
34Ca, 35Ca, 36Ca, 37Ca, 38Ca, 39Ca, 41Ca, 45Ca, 47Ca, 48Ca, 49Ca, 50Ca, 51Ca, 52Ca, 53Ca, 54Ca, 55Ca, 56Ca, 57Ca