Question

Choose the incorrect statement(s) among the following.
1. The maximum number of electrons present in L and N shells are 8 and 18 respectively,
2. The maximum number of electrons that can be accommodated in the outermost orbit is 8.
3. Shells are filled in a step-wise manner

• A. 1
• B. 2
• C. 1 and 2
• D. none of these

Answer 1

The correct option is C 1 and 2

1.In atoms ,shells name are K,L,M,N....

and value k is 1, L is 2, M is 3, N is 4 and so on.

and maximum no of electron in each shell is $2n^2$

so L shell accomdate 8 and N shell accomdate 32 electrons so that A statement is wrong .

2.Other than N shell and except K shell all shells can accomdate more than 8 electrons so outermost orbit can be M ,N which have more than 8 electrons.

3. Shells are filed in step-wise manner firstly K and then L and so on.