This fact has key implications for the building up of the periodic table of elements. 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. The year the element was discovered in the year 1772, through our article you will come to know about certain new things about the element Nitrogen. 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. The atomic number of nitrogen is 7, the element nitrogen was discovered by a Scottish physician, Danial Rutherford. 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. Though it contains only one element, it is not. representing one atom of sodium that has lost an electron to gain a positive charge. Since there are eight neutrons, this atom would be for nitrogen-15. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. The given configuration is for an isotope of nitrogen. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons in its nucleus. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10 -19 coulombs. Nitrogen has atomic number seven, and is the only element that can have seven protons.
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. Explanation: The electron configuration of Nitrogen ( 7N) will have 2 electrons in the innermost shell 1s and 5 electrons in the next shell which is divided into two subshells, 2s and 2p.
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