Calcium element (Ca) is in group 2 and period 4 of a periodic table. Calcium is in the s-block and it is classified as an alkaline earth metal on the periodic table.
There is a lot more information related to calcium which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Calcium element (Information Table)
- Calcium element in Periodic table
- Facts about Calcium
- Properties of Calcium
- Uses of Calcium
Calcium Element (Information Table)
The important data related to calcium element is given in the table below.
|Appearance of calcium||Silvery gray color|
|Atomic number of calcium||20|
|Symbol of calcium||Ca|
|Atomic mass of calcium||40.078 u|
|Protons, Neutrons & Electrons in calcium||Protons: 20, Neutrons: 20, Electrons: 20|
|State of calcium (at STP)||Solid|
|Group number of calcium in periodic table||2|
|Period number of calcium in periodic table||4|
|Block of calcium in periodic table||s-block|
|Category of calcium||Alkaline earth metals|
|Bohr model or Electrons per shell or Electrons arrangement in calcium||2, 8, 8, 2|
|Electron configuration of calcium||[Ar] 4s2|
|Orbital diagram of calcium|
|Valence electrons in calcium||2|
|Electronegativity of calcium (on pauling scale)||1.00|
|Atomic radius of calcium (van der Waals radius)||231 picometers|
|Density of calcium||1.55 g/cm3|
|1st ionization energy of calcium||6.113 eV|
|Main isotope of calcium||40Ca|
|Melting point of calcium||1115 K or 842 °C or 1548 °F|
|Boiling point of calcium||1757 K or 1484 °C or 2703 °F|
|Crystal structure of calcium||Face Centered Cubic (FCC)|
|Discovery of calcium||By Humphry Davy in 1808|
Also see: Interactive Periodic Table (It has rotating bohr models as well as many other details of all the 118 elements in a single periodic table).
Calcium element in Periodic table
The Calcium element (Ca) has the atomic number 20 and is located in group 2 and period 4. Calcium is in solid state at STP and it is classified as an alkaline earth metal on the periodic table.
Facts about calcium
Here are a few interesting facts about calcium element.
- Calcium is the 5th most abundant element (by mass) found from the earth’s crust.
- Calcium is also the 5th most abundant element present in the human body.
- Calcium is essential for all living beings.
- The calcium ions are also present in the sea water.
- Calcium is alkaline earth metal and so the calcium present in the soil controls the pH of the soil. Calcium makes the soil alkaline in nature.
- The teeth and bones of animals have calcium in it.
- If we consider the only metals present in the human body, then calcium is the most abundant metallic element found from the human body.
Properties of calcium
Here is a list of some physical properties and chemical properties of calcium.
Physical properties of calcium
- Calcium is a soft metal having a silvery gray appearance.
- You can cut the calcium metal even with a kitchen knife (because it is a soft metal).
- The calcium salts can form orange color. Because of this reason, calcium is used in fireworks.
- The melting point and boiling point of calcium is 1115 K and 1757 K respectively.
Chemical properties of calcium
- Calcium is a reactive metal and hence it is not found in its free state in nature. But it is always found as a compound with other elements in the earth’s crust.
- When calcium reacts with water, it forms the alkaline solution and liberates the heat during the reaction.
- There are many isotopes of calcium, out of which 40Ca is the most abundant isotope (almost 97%).
- The powdered calcium reacts very fast with water as more surface of calcium comes in contact with water.
Uses of calcium
Here are some uses of the calcium element.
- Gypsum is a chemical compound of calcium which is used in the manufacturing of Plaster Of Paris.
- Limestone also contains calcium, and this limestone is used in construction work.
- Limestone is also used for painting the walls.
- Calcium is used as a reducing agent in preparing other metals.
- Calcium metal is alloyed with other metals to get the alloy with improved properties.