Maximum number of electrons that can be accommodated in shell with n = 4 are:
Structure of Atom · Class 11 · JEE Main Previous Year Question
Maximum number of electrons that can be accommodated in shell with are:
- a
16
- b✓
32
- c
50
- d
72
32
🧠 The Shell Capacity Rule A principal quantum number () defines a shell. Within it, we have subshells () where electrons live. Pauli's Exclusion Principle dictates the limit.
🗺️ The Bohr-Stoner Method The total capacity of any shell is calculated using: For :
⚡ The Subshell Count For , we have four subshells:
- 4s: 2 electrons
- 4p: 6 electrons
- 4d: 10 electrons
- 4f: 14 electrons Sum . It's always faster to remember the rule, but counting subshells is a great way to verify!
⚠️ Common Traps Be careful not to confuse "number of orbitals" () with "number of electrons" (). Each orbital houses two electrons (with opposite spins).
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