How many maximum electrons can M shell have?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 18.
The M shell, which is the third electron shell of an atom, can hold a maximum of 18 electrons.
This is determined by the formula 2n2, where n is the principal quantum number (the shell number). For the M shell, n=3.
2 * 32 = 18
Thus, the M shell can accommodate up to 18 electrons, distributed across the available subshells (one s-subshell, three p-subshells, and five d-subshells).