Question : Which of the following is the maximum number of electrons that can be present in M-shell?
Option 1: 2
Option 2: 8
Option 3: 18
Option 4: 32
Correct Answer: 18
Solution : The correct answer is 18 .
A precise circular path known as the shell is followed by electrons as they orbit the nucleus. The shells are either designated alphabetically with letters beginning with K (K, L, M, etc.) or according to the primary quantum numbers (n = 1, 2, 3, 4, etc.). Only a certain number of electrons can fit inside each shell. According to the formula, the nth shell has a theoretical maximum capacity of 2n² electrons. Based on this formula, the M shell can hold a maximum of 18 electrons.
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