We can also conclude that chlorine atoms contain three shells. Thus we can verify our result in this way by finding the total number of electrons and its atomic number. Thus the total number of electrons present in a chlorine atom is seventeen which is equal to its atomic number. The rule says that the orbital having a lower value of (n+l) is filled first. The (n+l) rule, also known as the Aufbau principle or Aufbau sequence, determines the energy of all atomic orbitals. It can be seen that $ s - $ orbital contains a total of six electrons and $ p - $ orbital contains eleven electrons. This explains Bohr’s postulate: electrons fill up the orbitals in order of increasing energy, one electron per orbital, with no exceptions. Also we can conclude that the second shell contains eight electrons and the third shell contains only seven electrons thus it accepts one electron and becomes inert in the atmosphere by achieving a noble state configuration. Identify the relationships among a hydrogen atoms energy levels, sublevels, and atomic orbitals. Which element has the electron configuration. Therefore we can say that the total number of electrons present in $ p - $ orbital of chlorine atoms is eleven. When we write the configuration well put all 11 electrons in orbitals around the nucleus of the Sodium atom. Thus in total we can sum up the number of electrons present in $ p - $ orbital as : Its electronic configuration can be written as:įrom above we can observe that its $ 2p $ orbital is completely filled which contains six electrons and its $ 3p $ orbital contains five electrons. We can find the number of electrons which are present in the $ p - $ orbital of chlorine by writing its electronic configuration. Since we know that chlorine is a member of the halogen family and its atomic number is $ 17 $. With the help of electronic configuration we can find the total number of electrons which are available in its $ p - $ orbital. Pauli exclusion principle: no two electrons in an Only two electrons may occupy the same atomic. We will write its electronic configuration. Hint: The atomic number of chlorine is $ 17 $ which is an element of the halogen family and it has a tendency to accept an electron and become inert in the atmosphere.
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