Limestone is also used as a paint on walls.Limestone is also a calcium containing compound that is used in manufacturing cement for construction work.Calcium containing compounds (for example gypsum), is used in manufacturing various construction materials like POP (Plaster Of Paris).Calcium has many isotopes, out of which 40Ca is the most abundant isotope (and its abundance is around 97%).This is because the contact surface area of calcium increases with the water which makes the chemical reaction very fast. The powdered form of calcium reacts with water very rapidly.
#CA ELEMENT CONFIGURATION PLUS#
Calcium reacts with water and liberates hydrogen gas plus heat. Calcium is a chemically reactive metal so it is not found naturally, but it is always found as a compound with other elements. Chemical properties of CalciumĬhemical properties of calcium are mentioned below. Calcium salts can produce orange color, hence it is used in fireworks industries. Melting point of calcium is 842 ☌ and its boiling point is 1484 ☌. Calcium is a soft metal and it can be cut even with a kitchen knife. Calcium is a dull silvery grey colored soft alkaline earth metal. Physical properties of calcium are mentioned below. The physical and chemical properties of calcium element are mentioned below. Human body requires vitamin D to absorb the calcium from food. The requirement of calcium in the human body is fulfilled by eating (or drinking) calcium rich foods like yogurt, cheese, milk, spinach, etc. Calcium is an alkaline earth metal, so more calcium present in the soil results in alkaline soil (or soil having pH higher than 7). Calcium is also present in soil and it controls the pH level of soil. Out of all other metallic elements, the calcium element is the most abundant metallic element found in the human body. Calcium ions are also found dissolved in the sea water. Calcium is also the 5th most abundant element present in the human body. Calcium is the 5th most abundant element (by mass) found in the earth’s crust. Our teeth and bones contain calcium in it. Calcium is a very essential element for all living organisms. Interesting facts about calcium element are mentioned below. So the last electron of calcium enters the s-subshell or s-orbital. The simple answer: The elements will lie in the s, p, d or f block will completely depend upon the subshell in which the last electron will enter.įor example the electron configuration of calcium is 4s 2. How can you determine the blocks-wise position of elements? Protons 20 Neutrons 20 Electrons 20 Symbol Ca Atomic massĢ, 8, 8, 2 Electronic configuration 4s 2 Atomic radiusĢ31 picometers (van der Waals radius) Valence electronsĢ 1st Ionization energy 6.113 eV ElectronegativityįCC (Face centered cubic) Melting point 1115 K or 842 ☌ or 1548 ☏ Boiling point 1757 K or 1484 ☌ or 2703 ☏ Density 1.55 g/cm 3 Main isotope 40Ca Who discovered Calcium and when?īefore knowing this reason, first of all I want to ask you a simple question. Let’s dive right into it! Calcium Element (Ca) Information Appearanceĭull silvery grey color State (at STP) Solid Position in Periodic table So if you want to know anything about Calcium element, then this guide is for you. In fact, the table mentioned below is the perfect information box (Which gives you every single detail about the Calcium element in Periodic table.) Remember the energy order of subshells and numbers of orbitals they have.This is a SUPER easy guide on Calcium element. Note: The electron configuration of calcium and calcium ion are different. These energy levels we can find from the “n+l” rule. The order of electron orbital energy levels, starting from least to greatest, is as follows: 1s, 2s, 2p, 3s, 3p, 4s,3d, 4p, 5s, 4d,5p,6s,4f,5d, 6p, 7s, 5f, 6d, 7p. S subshell has one orbital and p subshell has three orbital. First, we see the electron configuration of Calcium: \ If we fill these electrons in orbitals from low energy level to high energy level. So, the number of electrons in calcium ions is 18. Calcium ion exists with 2+ charges on it. So, calcium is an s-block 2nd group element and it can give 2 electrons to make 2+ charges on neutral calcium. Atomic number tells us about the number of electrons and protons in an atom. 
If we know the periodic table then from there we can find that the atomic number of calcium is 20. From the periodic table we know calcium exists in the 2nd group and 4th period in s group.
Hint: Electron configuration is the distribution of electrons of an atom, ion or molecule in atomic or molecular orbital.
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