Answer:
Option B: 8
Explanation:
Given:
n = 2
'n' mentioned here defines, principle quantum number.
Principle quantum number is used to represent principle energy shell in which electron revolves around nucleus.
Value of n = 1, 2, 3, 4, .........
No. of electron in any principle energy shell = \(2n^2\)
n = 2
\(No.\ of\ electron = 2 (2)^2=2\times 4\\=8\)
Among given options, option b is correct.
