Question

Find the number of electrons that can be accommodated in K-shell of an atom.

• A. 8
• B. 2
• C. 1
• D. 4

Answer 1

The correct option is B 2

K-shell is the 1st shell of an atom. The number of electrons that each shell can accommodate is given by $2n^2$.
Hence number of electrons that K-shell can accommodate are - $2\times 1^2=2$