question_answer 10)

If K and L shells of an atom are full, then what would be the total number of electrons in the atom?                        

Answer:

The maximum number of electrons present in a shell = 2n2  Where n = shell number                                                            Value of n for K shell = 1                                                            Therefore, Maximum number of electrons in K shell = 2n2 = 2(1) = 2 Value of n for L shell = 2                                                            Therefore, Maximum number of electrons in L shell = 2(2)2 = 8 Thus, total no. of electrons = 2 + 8 = 10