Question

shell can accommodate a maximum number of 2 electrons.

• A. L
• B. K
• C. M

Answer 1

The correct option is B K

According to Bohr-Bury scheme, the maximum number of electrons in a shell = ${2n}^2$
where n is the orbit number.

According to the question,
2 = ${2n}^2$
$n^2$ = 1
Hence, n = 1
Thus, K-shell which has n = 1 will accommodate a maximum of 2 electrons.