The maximum number of electrons in a shell can be calculated by the formula _______.
The correct option is D2n2 The maximum number of electrons present in a shell is given by the formula 2n2, where ‘n’ is always natural number. n represents the principal quantum number. It represents the size and the energy of the shell. Hence, the maximum number of electrons in different shells are as follows:
1. First orbit or K-shell (n=1) = 2x12 = 2 2. Second orbit or L-shell (n=2) = 2x22 = 8 and so on.