Calcium has 26 isotopes. 6 of them are naturally occurring, 5 of which are stable. Calcium is used by many forms of life to make shells and bones. Virtually no use for the pure metal, however two of its compounds lime (CaO) and gypsum (CaSO4) are in great demand by a number of industries. Back to Calcium isotopes list. The atomic number of calcium is 20, and atomic weight is 40.078. The density of calcium is 1.55 grams per cubic centimeter. Its melting point is 842 °C and boiling point is 1494 °C. Calcium is harder than lead but can be cut with a knife with effort.
- Calcium Electron Configuration
- Calcium Atomic Number
- Atomic Mass Of Ca
- Calcium Atomic Mass
- Calcium Atomic Number And Reactivity
Calcium is a chemical element found in nature. An ion is an atom of a chemical element that has an unequal number of electrons compared to protons. Remember that electrons are negative charges, and protons are positive charges. In the case of the calcium ion, we have a calcium element with a positive charge of 2.
Calcium Electron Configuration
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Correspondingly, why is a calcium ion smaller than a calcium atom?
Because the calcium ion donates two electrons to achieve the stable state. Thus, the radius of a calcium ion is smaller than a calcium atom.
Similarly, how does a calcium atom become an ion? When it loses electron(s) it becomes positively charged and is called a cation. Calcium atom with electron arrangement K (2),L(8),M(8),N(2) loses two electrons from its outermost shell ( N shell) and forms positive ions called Calcium , Ca2+ ion.
Beside above, what does calcium ion do?
Calcium in biology. Calcium ions (Ca2+) contribute to the physiology and biochemistry of organisms cell. They play an important role in signal transduction pathways, where they act as a second messenger, in neurotransmitter release from neurons, in contraction of all muscle cell types, and in fertilization.
What does a calcium atom look like?
Calcium atoms have 20 electrons and 20 protons. There are 2 valence electrons in the outer shell. Calcium is an important element for life on Earth and is the fifth most abundant element in the Earth's crust. Under standard conditions calcium is a shiny, silvery metal.
Atomic Number of Calcium is 20.
Chemical symbol for Calcium is Ca. Number of protons in Calcium is 20. Atomic weight of Calcium is 40.078 u or g/mol. Melting point of Calcium is 839 °C and its the boiling point is 1487 °C.
» Boiling Point» Melting Point» Abundant» State at STP» Discovery YearAbout Calcium
One of the most important elements for humans and animals, calcium is a light and soft metal of light grey color. It is very reactive, especially with water and air. It has got its name from a Latin word meaning lime. It is impossible to find pure calcium in nature, but it can be found in abundance in various chemical compounds, thus it is considered to be the fifth most abundant element on the surface of earth. We receive calcium with foods and when brushing our teeth. In a human body, we have about 1 kilogram of calcium which is mainly in our bones and teeth. Calcium is used in metallurgy to produce alloys with other metals, as well as in chemical industry or for producing various goods like paper, food, products from clay, and others. Calcium and especially a few of its compounds are very toxic.
Uses of Calcium
Calcium, a silvery-white, alkaline earth metal with the symbol Ca, is mostly used in steelmaking. Calcium compounds are commonly used in foods, paints, toothpaste, rubbers, papermaking, baking, and medicine. They are used as pharmaceuticals as well as for laboratory purposes too. Calcium carbonate is mainly used in the construction industry. It is also preferred in the oil industry, and it can be added to swimming pools.
Calcium metal is used as an alloying agent for aluminum, copper, and magnesium. Tricalcium phosphate (abbreviated TCP) can be found in baby powders and toothpaste. Calcium fluoride, a compound with the elements calcium and fluorine, is used in the manufacture optical components like lenses, windows as well as telescopes, spectroscopy, etc. Calcium pyrophosphate, another compound with the formula Ca2P2O7, is widely used in toothpaste as a mild abrasive agent.
Compounds with Calcium
- CaCO3: Calcium carbonate
- CaC2: Calcium carbide
- CaF2: Calcium fluoride
- Ca(OH)2: Calcium hydroxide
- CaCl2: Calcium chloride
- CaCN2: Calcium cyanamide
- CaO: Calcium oxide
- CaSO4: Calcium sulfate
- Ca2P2O7: Calcium pyrophosphate
- Ca3(PO4)2: Tricalcium phosphate
- C6H10CaO6: Calcium lactate
- CaSO3: Calcium sulfite
- Ca2O4Si: Calcium silicate
- C4H6O4Ca: Calcium acetate
Properties of Calcium Element
Calcium Atomic Number
Atomic Number (Z) | 20 |
---|---|
Atomic Symbol | Ca |
Group | 2 |
Period | 4 |
Atomic Weight | 40.078 u |
Density | 1.54 g/cm3 |
Melting Point (K) | 1115 K |
Melting Point (℃) | 839 °C |
Boiling Point (K) | 1757 K |
Boiling Point (℃) | 1487 °C |
Heat Capacity | 0.647 J/g · K |
Abundance | 41500 mg/kg |
State at STP | Solid |
Occurrence | Primordial |
Description | Alkaline earth metal |
Electronegativity (Pauling) χ | 1 |
Ionization Energy (eV) | 6.11316 |
Atomic Radius | 180pm |
Covalent Radius | 174pm |
Valence Electrons | 2 |
Year of Discovery | 1808 |
Discoverer | Davy |
What is the Boiling Point of Calcium?
Calcium boiling point is 1487 °C. Boiling point of Calcium in Kelvin is 1757 K.
What is the Melting Point of Calcium?
Calcium melting point is 839 °C. Melting point of Calcium in Kelvin is 1115 K.
How Abundant is Calcium?
Abundant value of Calcium is 41500 mg/kg.
What is the State of Calcium at Standard Temperature and Pressure (STP)?
Atomic Mass Of Ca
State of Calcium is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.
When was Calcium Discovered?
Calcium Atomic Mass
Calcium Atomic Number And Reactivity
Calcium was discovered in 1808.