• # question_answer What is the maximum number of electrons which can be accommodated in an atom in which the highest principal quantum number value is 4            [MP PMT 2000] A)                 10           B)                 18 C)                 32           D)                 54

Maximum number of electron $=2{{n}^{2}}(\text{where }n=4)=2\times {{4}^{2}}=32$.