NUMBER 17 PERIODIC TABLE FREE

Chlorine is chemically reactive and hence it is not found in a free state, but it is always found as a compound with other elements (for example, NaCl, HCl, etc).Chemical properties of ChlorineĬhemical properties of chlorine are mentioned below. Density of chlorine gas is 3.214 g/L which is far more than the density of the atmospheric gases of the earth.The melting point of diatomic chlorine gas (Cl 2) is -101.5 ☌ and it’s boiling point is -34.04 ☌.Chlorine is a pale yellow-green colored gas having a strong smell.Physical properties of chlorine are mentioned below. The physical and chemical properties of chlorine element are mentioned below. Human body intake chlorine from table salt (i.e NaCl) but inhaling pure chlorine gas is very toxic.

Chlorine is the 2nd lightest halogen present on the periodic table (the lightest halogen is fluorine).Human body also contains chlorine element.If we talk about the abundance of chlorine in the earth’s crust, then chlorine is the 21st most abundant element.This makes chlorine the 3rd most abundant element in the ocean. The oceans of the earth contain an excess amount of chlorine (which is present in NaCl dissolved in water).Chlorine is always found as a diatomic molecule (i.e Cl 2).This is because chlorine exists as a greenish-yellow colored gas. The name “chlorine” was derived from the Greek word “khloros” which means “greenish-yellow” color.Interesting facts about chlorine are mentioned below. So the last electron of chlorine enters the p-subshell or p-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 chlorine is 3s 2 3p 5. How can you determine the blocks-wise position of elements? Orthorhombic Melting point of Chlorine (Cl 2) 171.6 K or -101.5 ☌ or -105.7 ☏ Boiling point of Chlorine (Cl 2) 239.11 K or -34.04 ☌ or -29.27 ☏ Density 3.214 g/L Main isotopes 35Cl and 37Cl Who discovered Chlorine and when?Ĭarl Wilhelm Scheele in 1774 CAS number of (Cl 2) īefore knowing this reason, first of all I want to ask you a simple question. Protons 17 Neutrons 18 Electrons 17 Symbol Cl Atomic massĢ, 8, 7 Electronic configuration 3s 2 3p 5 Atomic radiusġ75 picometers (van der Waals radius) Valence electronsħ 1st Ionization energy 12.968 eV Electronegativity Let’s dive right into it! Chlorine Element (Cl) Information Appearance Pale yellow-green gas State (at STP) Gas Position in Periodic table So if you want to know anything about Chlorine 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 Chlorine element in Periodic table.) This fact has key implications for the building up of the periodic table of elements.This is a SUPER easy guide on Chlorine element. The ordering of the electrons in the ground state of multielectron atoms, starts with the lowest energy state (ground state) and moves progressively from there up the energy scale until each of the atom’s electrons has been assigned a unique set of quantum numbers. It is the Pauli exclusion principle that requires the electrons in an atom to occupy different energy levels instead of them all condensing in the ground state.

In the periodic table, the elements are listed in order of increasing atomic number Z. The number of electrons in each element’s electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. The configuration of these electrons follows from the principles of quantum mechanics. The chemical properties of the atom are determined by the number of protons, in fact, by number and arrangement of electrons. See also: Atomic Number – Does it conserve in a nuclear reaction? Atomic Number and Chemical PropertiesĮvery solid, liquid, gas, and plasma is composed of neutral or ionized atoms. It is the electrons that are responsible for the chemical bavavior of atoms, and which identify the various chemical elements.

In a neutral atom there are as many electrons as protons moving about nucleus. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10 -19 coulombs. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. The nucleus is composed of protons and neutrons. The atom consist of a small but massive nucleus surrounded by a cloud of rapidly moving electrons.

Number 17 periodic table