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CBSE Class 10 Answered

How many electrons does the fourth energy shell have and why?
Asked by Sayoni Maiti | 28 Dec, 2013, 07:33: PM
answered-by-expert Expert Answer
The maximum number of electrons which can occupy a specific energy level is found by the following formula:

Electron Capacity = 2n2

The variable n represents the Principal Quantum Number or the number of the energy level in question.

For the fourth energy level:

n = 4

Hence the maximum electrons in the fourth energy level are = 2 x 42 = 32 electrons

Answered by Prachi Sawant | 02 Jan, 2014, 11:56: AM

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