Electron Configuration | Structure of Atom | Chemistry | Class 9 

There is a set of rules to remember while the distribution of electrons in different orbits.
Rule 1: The maximum number of electrons present in a particular shell is calculated by the formula 2n2, where “n” represents the shell number. For instance, K shell is the first shell and it can hold up to 2(1)2 = 2 electrons. Similarly, L shell is the second shell and it can hold up to 2(2)2 = 8 electrons. This formula helps to calculate the maximum number of electrons that an orbit can accommodate.
Rule 2: The maximum capacity to hold electrons in the outermost shell is 8.
Rule 3: The electrons will fill the inner shells before the outer shells. First electrons will fill the K-shell and then L shell and so on. Thus, the electronic configuration of elements follows an ascending order.
#electron #electronconfiguration #structureofatom #atom
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